java.sql.DatabaseMetaData |
Comprehensive information about the database as a whole.
This interface is implemented by driver vendors to let users know the capabilities of a Database Management System (DBMS) in combination with the driver based on JDBCTM technology ("JDBC driver") that is used with it. Different relational DBMSs often support different features, implement features in different ways, and use different data types. In addition, a driver may implement a feature on top of what the DBMS offers. Information returned by methods in this interface applies to the capabilities of a particular driver and a particular DBMS working together. Note that as used in this documentation, the term "database" is used generically to refer to both the driver and DBMS.
A user for this interface is commonly a tool that needs to discover how to
deal with the underlying DBMS. This is especially true for applications
that are intended to be used with more than one DBMS. For example, a tool might use the method
getTypeInfo
to find out what data types can be used in a
CREATE TABLE
statement. Or a user might call the method
supportsCorrelatedSubqueries
to see if it is possible to use
a correlated subquery or supportsBatchUpdates
to see if it is
possible to use batch updates.
Some DatabaseMetaData
methods return lists of information
in the form of ResultSet
objects.
Regular ResultSet
methods, such as
getString
and getInt
, can be used
to retrieve the data from these ResultSet
objects. If
a given form of metadata is not available, an empty ResultSet
will be returned. Additional columns beyond the columns defined to be
returned by the ResultSet
object for a given method
can be defined by the JDBC driver vendor and must be accessed
by their column label.
Some DatabaseMetaData
methods take arguments that are
String patterns. These arguments all have names such as fooPattern.
Within a pattern String, "%" means match any substring of 0 or more
characters, and "_" means match any one character. Only metadata
entries matching the search pattern are returned. If a search pattern
argument is set to null
, that argument's criterion will
be dropped from the search.
Constants | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
short | attributeNoNulls | Indicates that NULL values might not be allowed. |
|||||||||
short | attributeNullable | Indicates that NULL values are definitely allowed. |
|||||||||
short | attributeNullableUnknown | Indicates that whether NULL values are allowed is not
known. |
|||||||||
int | bestRowNotPseudo | Indicates that the best row identifier is NOT a pseudo column. | |||||||||
int | bestRowPseudo | Indicates that the best row identifier is a pseudo column. | |||||||||
int | bestRowSession | Indicates that the scope of the best row identifier is the remainder of the current session. | |||||||||
int | bestRowTemporary | Indicates that the scope of the best row identifier is very temporary, lasting only while the row is being used. | |||||||||
int | bestRowTransaction | Indicates that the scope of the best row identifier is the remainder of the current transaction. | |||||||||
int | bestRowUnknown | Indicates that the best row identifier may or may not be a pseudo column. | |||||||||
int | columnNoNulls | Indicates that the column might not allow NULL values. |
|||||||||
int | columnNullable | Indicates that the column definitely allows NULL values. |
|||||||||
int | columnNullableUnknown | Indicates that the nullability of columns is unknown. | |||||||||
int | functionColumnIn | Indicates that the parameter or column is an IN parameter. | |||||||||
int | functionColumnInOut | Indicates that the parameter or column is an INOUT parameter. | |||||||||
int | functionColumnOut | Indicates that the parameter or column is an OUT parameter. | |||||||||
int | functionColumnResult | Indicates that the parameter or column is a column in a result set. | |||||||||
int | functionColumnUnknown | Indicates that type of the parameter or column is unknown. | |||||||||
int | functionNoNulls | Indicates that NULL values are not allowed. |
|||||||||
int | functionNoTable | Indicates that the function does not return a table. | |||||||||
int | functionNullable | Indicates that NULL values are allowed. |
|||||||||
int | functionNullableUnknown | Indicates that whether NULL values are allowed
is unknown. |
|||||||||
int | functionResultUnknown | Indicates that it is not known whether the function returns a result or a table. | |||||||||
int | functionReturn | Indicates that the parameter or column is a return value. | |||||||||
int | functionReturnsTable | Indicates that the function returns a table. | |||||||||
int | importedKeyCascade | For the column UPDATE_RULE ,
indicates that
when the primary key is updated, the foreign key (imported key)
is changed to agree with it. |
|||||||||
int | importedKeyInitiallyDeferred | Indicates deferrability. | |||||||||
int | importedKeyInitiallyImmediate | Indicates deferrability. | |||||||||
int | importedKeyNoAction | For the columns UPDATE_RULE
and DELETE_RULE , indicates that
if the primary key has been imported, it cannot be updated or deleted. |
|||||||||
int | importedKeyNotDeferrable | Indicates deferrability. | |||||||||
int | importedKeyRestrict | For the column UPDATE_RULE , indicates that
a primary key may not be updated if it has been imported by
another table as a foreign key. |
|||||||||
int | importedKeySetDefault | For the columns UPDATE_RULE
and DELETE_RULE , indicates that
if the primary key is updated or deleted, the foreign key (imported key)
is set to the default value. |
|||||||||
int | importedKeySetNull | For the columns UPDATE_RULE
and DELETE_RULE , indicates that
when the primary key is updated or deleted, the foreign key (imported key)
is changed to NULL . |
|||||||||
int | procedureColumnIn | Indicates that the column stores IN parameters. | |||||||||
int | procedureColumnInOut | Indicates that the column stores INOUT parameters. | |||||||||
int | procedureColumnOut | Indicates that the column stores OUT parameters. | |||||||||
int | procedureColumnResult | Indicates that the column stores results. | |||||||||
int | procedureColumnReturn | Indicates that the column stores return values. | |||||||||
int | procedureColumnUnknown | Indicates that type of the column is unknown. | |||||||||
int | procedureNoNulls | Indicates that NULL values are not allowed. |
|||||||||
int | procedureNoResult | Indicates that the procedure does not return a result. | |||||||||
int | procedureNullable | Indicates that NULL values are allowed. |
|||||||||
int | procedureNullableUnknown | Indicates that whether NULL values are allowed
is unknown. |
|||||||||
int | procedureResultUnknown | Indicates that it is not known whether the procedure returns a result. | |||||||||
int | procedureReturnsResult | Indicates that the procedure returns a result. | |||||||||
int | sqlStateSQL | A possible return value for the method
DatabaseMetaData.getSQLStateType which is used to indicate
whether the value returned by the method
SQLException.getSQLState is an SQLSTATE value. |
|||||||||
int | sqlStateSQL99 | A possible return value for the method
DatabaseMetaData.getSQLStateType which is used to indicate
whether the value returned by the method
SQLException.getSQLState is an SQL99 SQLSTATE value. |
|||||||||
int | sqlStateXOpen | A possible return value for the method
DatabaseMetaData.getSQLStateType which is used to indicate
whether the value returned by the method
SQLException.getSQLState is an
X/Open (now know as Open Group) SQL CLI SQLSTATE value. |
|||||||||
short | tableIndexClustered | Indicates that this table index is a clustered index. | |||||||||
short | tableIndexHashed | Indicates that this table index is a hashed index. | |||||||||
short | tableIndexOther | Indicates that this table index is not a clustered index, a hashed index, or table statistics; it is something other than these. | |||||||||
short | tableIndexStatistic | Indicates that this column contains table statistics that are returned in conjunction with a table's index descriptions. | |||||||||
int | typeNoNulls | Indicates that a NULL value is NOT allowed for this
data type. |
|||||||||
int | typeNullable | Indicates that a NULL value is allowed for this
data type. |
|||||||||
int | typeNullableUnknown | Indicates that it is not known whether a NULL value
is allowed for this data type. |
|||||||||
int | typePredBasic | Indicates that the data type can be only be used in WHERE
search clauses
that do not use LIKE predicates. |
|||||||||
int | typePredChar | Indicates that the data type
can be only be used in WHERE search clauses
that use LIKE predicates. |
|||||||||
int | typePredNone | Indicates that WHERE search clauses are not supported
for this type. |
|||||||||
int | typeSearchable | Indicates that all WHERE search clauses can be
based on this type. |
|||||||||
int | versionColumnNotPseudo | Indicates that this version column is NOT a pseudo column. | |||||||||
int | versionColumnPseudo | Indicates that this version column is a pseudo column. | |||||||||
int | versionColumnUnknown | Indicates that this version column may or may not be a pseudo column. |
Public Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Retrieves whether the current user can call all the procedures
returned by the method
getProcedures . | |||||||||||
Retrieves whether the current user can use all the tables returned
by the method
getTables in a SELECT
statement. | |||||||||||
Retrieves whether a
SQLException while autoCommit is true inidcates
that all open ResultSets are closed, even ones that are holdable. | |||||||||||
Retrieves whether a data definition statement within a transaction forces
the transaction to commit.
| |||||||||||
Retrieves whether this database ignores a data definition statement
within a transaction.
| |||||||||||
Retrieves whether or not a visible row delete can be detected by
calling the method
ResultSet.rowDeleted . | |||||||||||
Retrieves whether the return value for the method
getMaxRowSize includes the SQL data types
LONGVARCHAR and LONGVARBINARY . | |||||||||||
Retrieves a description of the given attribute of the given type
for a user-defined type (UDT) that is available in the given schema
and catalog.
| |||||||||||
Retrieves a description of a table's optimal set of columns that
uniquely identifies a row.
| |||||||||||
Retrieves the
String that this database uses as the
separator between a catalog and table name. | |||||||||||
Retrieves the database vendor's preferred term for "catalog".
| |||||||||||
Retrieves the catalog names available in this database.
| |||||||||||
Retrieves a list of the client info properties
that the driver supports.
| |||||||||||
Retrieves a description of the access rights for a table's columns.
| |||||||||||
Retrieves a description of table columns available in
the specified catalog.
| |||||||||||
Retrieves the connection that produced this metadata object.
| |||||||||||
Retrieves a description of the foreign key columns in the given foreign key
table that reference the primary key or the columns representing a unique constraint of the parent table (could be the same or a different table).
| |||||||||||
Retrieves the major version number of the underlying database.
| |||||||||||
Retrieves the minor version number of the underlying database.
| |||||||||||
Retrieves the name of this database product.
| |||||||||||
Retrieves the version number of this database product.
| |||||||||||
Retrieves this database's default transaction isolation level.
| |||||||||||
Retrieves this JDBC driver's major version number.
| |||||||||||
Retrieves this JDBC driver's minor version number.
| |||||||||||
Retrieves the name of this JDBC driver.
| |||||||||||
Retrieves the version number of this JDBC driver as a
String . | |||||||||||
Retrieves a description of the foreign key columns that reference the
given table's primary key columns (the foreign keys exported by a
table).
| |||||||||||
Retrieves all the "extra" characters that can be used in unquoted
identifier names (those beyond a-z, A-Z, 0-9 and _).
| |||||||||||
Retrieves a description of the given catalog's system or user
function parameters and return type.
| |||||||||||
Retrieves a description of the system and user functions available
in the given catalog.
| |||||||||||
Retrieves the string used to quote SQL identifiers.
| |||||||||||
Retrieves a description of the primary key columns that are
referenced by the given table's foreign key columns (the primary keys
imported by a table).
| |||||||||||
Retrieves a description of the given table's indices and statistics.
| |||||||||||
Retrieves the major JDBC version number for this
driver.
| |||||||||||
Retrieves the minor JDBC version number for this
driver.
| |||||||||||
Retrieves the maximum number of hex characters this database allows in an
inline binary literal.
| |||||||||||
Retrieves the maximum number of characters that this database allows in a
catalog name.
| |||||||||||
Retrieves the maximum number of characters this database allows
for a character literal.
| |||||||||||
Retrieves the maximum number of characters this database allows
for a column name.
| |||||||||||
Retrieves the maximum number of columns this database allows in a
GROUP BY clause. | |||||||||||
Retrieves the maximum number of columns this database allows in an index.
| |||||||||||
Retrieves the maximum number of columns this database allows in an
ORDER BY clause. | |||||||||||
Retrieves the maximum number of columns this database allows in a
SELECT list. | |||||||||||
Retrieves the maximum number of columns this database allows in a table.
| |||||||||||
Retrieves the maximum number of concurrent connections to this
database that are possible.
| |||||||||||
Retrieves the maximum number of characters that this database allows in a
cursor name.
| |||||||||||
Retrieves the maximum number of bytes this database allows for an
index, including all of the parts of the index.
| |||||||||||
Retrieves the maximum number of characters that this database allows in a
procedure name.
| |||||||||||
Retrieves the maximum number of bytes this database allows in
a single row.
| |||||||||||
Retrieves the maximum number of characters that this database allows in a
schema name.
| |||||||||||
Retrieves the maximum number of characters this database allows in
an SQL statement.
| |||||||||||
Retrieves the maximum number of active statements to this database
that can be open at the same time.
| |||||||||||
Retrieves the maximum number of characters this database allows in
a table name.
| |||||||||||
Retrieves the maximum number of tables this database allows in a
SELECT statement. | |||||||||||
Retrieves the maximum number of characters this database allows in
a user name.
| |||||||||||
Retrieves a comma-separated list of math functions available with
this database.
| |||||||||||
Retrieves a description of the given table's primary key columns.
| |||||||||||
Retrieves a description of the given catalog's stored procedure parameter
and result columns.
| |||||||||||
Retrieves the database vendor's preferred term for "procedure".
| |||||||||||
Retrieves a description of the stored procedures available in the given
catalog.
| |||||||||||
Retrieves this database's default holdability for
ResultSet
objects. | |||||||||||
Indicates whether or not this data source supports the SQL
ROWID type,
and if so the lifetime for which a RowId object remains valid. | |||||||||||
Retrieves a comma-separated list of all of this database's SQL keywords
that are NOT also SQL:2003 keywords.
| |||||||||||
Indicates whether the SQLSTATE returned by
SQLException.getSQLState
is X/Open (now known as Open Group) SQL CLI or SQL:2003. | |||||||||||
Retrieves the database vendor's preferred term for "schema".
| |||||||||||
Retrieves the schema names available in this database.
| |||||||||||
Retrieves the schema names available in this database.
| |||||||||||
Retrieves the string that can be used to escape wildcard characters.
| |||||||||||
Retrieves a comma-separated list of string functions available with
this database.
| |||||||||||
Retrieves a description of the table hierarchies defined in a particular
schema in this database.
| |||||||||||
Retrieves a description of the user-defined type (UDT) hierarchies defined in a
particular schema in this database.
| |||||||||||
Retrieves a comma-separated list of system functions available with
this database.
| |||||||||||
Retrieves a description of the access rights for each table available
in a catalog.
| |||||||||||
Retrieves the table types available in this database.
| |||||||||||
Retrieves a description of the tables available in the given catalog.
| |||||||||||
Retrieves a comma-separated list of the time and date functions available
with this database.
| |||||||||||
Retrieves a description of all the data types supported by
this database.
| |||||||||||
Retrieves a description of the user-defined types (UDTs) defined
in a particular schema.
| |||||||||||
Retrieves the URL for this DBMS.
| |||||||||||
Retrieves the user name as known to this database.
| |||||||||||
Retrieves a description of a table's columns that are automatically
updated when any value in a row is updated.
| |||||||||||
Retrieves whether or not a visible row insert can be detected
by calling the method
ResultSet.rowInserted . | |||||||||||
Retrieves whether a catalog appears at the start of a fully qualified
table name.
| |||||||||||
Retrieves whether this database is in read-only mode.
| |||||||||||
Indicates whether updates made to a LOB are made on a copy or directly
to the LOB.
| |||||||||||
Retrieves whether this database supports concatenations between
NULL and non-NULL values being
NULL . | |||||||||||
Retrieves whether
NULL values are sorted at the end regardless of
sort order. | |||||||||||
Retrieves whether
NULL values are sorted at the start regardless
of sort order. | |||||||||||
Retrieves whether
NULL values are sorted high. | |||||||||||
Retrieves whether
NULL values are sorted low. | |||||||||||
Retrieves whether deletes made by others are visible.
| |||||||||||
Retrieves whether inserts made by others are visible.
| |||||||||||
Retrieves whether updates made by others are visible.
| |||||||||||
Retrieves whether a result set's own deletes are visible.
| |||||||||||
Retrieves whether a result set's own inserts are visible.
| |||||||||||
Retrieves whether for the given type of
ResultSet object,
the result set's own updates are visible. | |||||||||||
Retrieves whether this database treats mixed case unquoted SQL identifiers as
case insensitive and stores them in lower case.
| |||||||||||
Retrieves whether this database treats mixed case quoted SQL identifiers as
case insensitive and stores them in lower case.
| |||||||||||
Retrieves whether this database treats mixed case unquoted SQL identifiers as
case insensitive and stores them in mixed case.
| |||||||||||
Retrieves whether this database treats mixed case quoted SQL identifiers as
case insensitive and stores them in mixed case.
| |||||||||||
Retrieves whether this database treats mixed case unquoted SQL identifiers as
case insensitive and stores them in upper case.
| |||||||||||
Retrieves whether this database treats mixed case quoted SQL identifiers as
case insensitive and stores them in upper case.
| |||||||||||
Retrieves whether this database supports the ANSI92 entry level SQL
grammar.
| |||||||||||
Retrieves whether this database supports the ANSI92 full SQL grammar supported.
| |||||||||||
Retrieves whether this database supports the ANSI92 intermediate SQL grammar supported.
| |||||||||||
Retrieves whether this database supports
ALTER TABLE
with add column. | |||||||||||
Retrieves whether this database supports
ALTER TABLE
with drop column. | |||||||||||
Retrieves whether this database supports batch updates.
| |||||||||||
Retrieves whether a catalog name can be used in a data manipulation statement.
| |||||||||||
Retrieves whether a catalog name can be used in an index definition statement.
| |||||||||||
Retrieves whether a catalog name can be used in a privilege definition statement.
| |||||||||||
Retrieves whether a catalog name can be used in a procedure call statement.
| |||||||||||
Retrieves whether a catalog name can be used in a table definition statement.
| |||||||||||
Retrieves whether this database supports column aliasing.
| |||||||||||
Retrieves whether this database supports the JDBC scalar function
CONVERT for conversions between the JDBC types fromType
and toType. | |||||||||||
Retrieves whether this database supports the JDBC scalar function
CONVERT for the conversion of one JDBC type to another. | |||||||||||
Retrieves whether this database supports the ODBC Core SQL grammar.
| |||||||||||
Retrieves whether this database supports correlated subqueries.
| |||||||||||
Retrieves whether this database supports both data definition and
data manipulation statements within a transaction.
| |||||||||||
Retrieves whether this database supports only data manipulation
statements within a transaction.
| |||||||||||
Retrieves whether, when table correlation names are supported, they
are restricted to being different from the names of the tables.
| |||||||||||
Retrieves whether this database supports expressions in
ORDER BY lists. | |||||||||||
Retrieves whether this database supports the ODBC Extended SQL grammar.
| |||||||||||
Retrieves whether this database supports full nested outer joins.
| |||||||||||
Retrieves whether auto-generated keys can be retrieved after
a statement has been executed
| |||||||||||
Retrieves whether this database supports some form of
GROUP BY clause. | |||||||||||
Retrieves whether this database supports using columns not included in
the
SELECT statement in a GROUP BY clause
provided that all of the columns in the SELECT statement
are included in the GROUP BY clause. | |||||||||||
Retrieves whether this database supports using a column that is
not in the
SELECT statement in a
GROUP BY clause. | |||||||||||
Retrieves whether this database supports the SQL Integrity
Enhancement Facility.
| |||||||||||
Retrieves whether this database supports specifying a
LIKE escape clause. | |||||||||||
Retrieves whether this database provides limited support for outer
joins.
| |||||||||||
Retrieves whether this database supports the ODBC Minimum SQL grammar.
| |||||||||||
Retrieves whether this database treats mixed case unquoted SQL identifiers as
case sensitive and as a result stores them in mixed case.
| |||||||||||
Retrieves whether this database treats mixed case quoted SQL identifiers as
case sensitive and as a result stores them in mixed case.
| |||||||||||
Retrieves whether it is possible to have multiple
ResultSet objects
returned from a CallableStatement object
simultaneously. | |||||||||||
Retrieves whether this database supports getting multiple
ResultSet objects from a single call to the
method execute . | |||||||||||
Retrieves whether this database allows having multiple
transactions open at once (on different connections).
| |||||||||||
Retrieves whether this database supports named parameters to callable
statements.
| |||||||||||
Retrieves whether columns in this database may be defined as non-nullable.
| |||||||||||
Retrieves whether this database supports keeping cursors open
across commits.
| |||||||||||
Retrieves whether this database supports keeping cursors open
across rollbacks.
| |||||||||||
Retrieves whether this database supports keeping statements open
across commits.
| |||||||||||
Retrieves whether this database supports keeping statements open
across rollbacks.
| |||||||||||
Retrieves whether this database supports using a column that is
not in the
SELECT statement in an
ORDER BY clause. | |||||||||||
Retrieves whether this database supports some form of outer join.
| |||||||||||
Retrieves whether this database supports positioned
DELETE
statements. | |||||||||||
Retrieves whether this database supports positioned
UPDATE
statements. | |||||||||||
Retrieves whether this database supports the given concurrency type
in combination with the given result set type.
| |||||||||||
Retrieves whether this database supports the given result set holdability.
| |||||||||||
Retrieves whether this database supports the given result set type.
| |||||||||||
Retrieves whether this database supports savepoints.
| |||||||||||
Retrieves whether a schema name can be used in a data manipulation statement.
| |||||||||||
Retrieves whether a schema name can be used in an index definition statement.
| |||||||||||
Retrieves whether a schema name can be used in a privilege definition statement.
| |||||||||||
Retrieves whether a schema name can be used in a procedure call statement.
| |||||||||||
Retrieves whether a schema name can be used in a table definition statement.
| |||||||||||
Retrieves whether this database supports
SELECT FOR UPDATE
statements. | |||||||||||
Retrieves whether this database supports statement pooling.
| |||||||||||
Retrieves whether this database supports invoking user-defined or vendor functions
using the stored procedure escape syntax.
| |||||||||||
Retrieves whether this database supports stored procedure calls
that use the stored procedure escape syntax.
| |||||||||||
Retrieves whether this database supports subqueries in comparison
expressions.
| |||||||||||
Retrieves whether this database supports subqueries in
EXISTS expressions. | |||||||||||
Retrieves whether this database supports subqueries in
IN expressions. | |||||||||||
Retrieves whether this database supports subqueries in quantified
expressions.
| |||||||||||
Retrieves whether this database supports table correlation names.
| |||||||||||
Retrieves whether this database supports the given transaction isolation level.
| |||||||||||
Retrieves whether this database supports transactions.
| |||||||||||
Retrieves whether this database supports SQL
UNION . | |||||||||||
Retrieves whether this database supports SQL
UNION ALL . | |||||||||||
Retrieves whether or not a visible row update can be detected by
calling the method
ResultSet.rowUpdated . | |||||||||||
Retrieves whether this database uses a file for each table.
| |||||||||||
Retrieves whether this database stores tables in a local file.
|
[Expand]
Inherited Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
From interface
java.sql.Wrapper
|
Indicates that NULL
values might not be allowed.
A possible value for the column
NULLABLE
in the ResultSet
object
returned by the method getAttributes
.
Indicates that NULL
values are definitely allowed.
A possible value for the column NULLABLE
in the ResultSet
object
returned by the method getAttributes
.
Indicates that whether NULL
values are allowed is not
known.
A possible value for the column NULLABLE
in the ResultSet
object
returned by the method getAttributes
.
Indicates that the best row identifier is NOT a pseudo column.
A possible value for the column
PSEUDO_COLUMN
in the ResultSet
object
returned by the method getBestRowIdentifier
.
Indicates that the best row identifier is a pseudo column.
A possible value for the column
PSEUDO_COLUMN
in the ResultSet
object
returned by the method getBestRowIdentifier
.
Indicates that the scope of the best row identifier is the remainder of the current session.
A possible value for the column
SCOPE
in the ResultSet
object
returned by the method getBestRowIdentifier
.
Indicates that the scope of the best row identifier is very temporary, lasting only while the row is being used.
A possible value for the column
SCOPE
in the ResultSet
object
returned by the method getBestRowIdentifier
.
Indicates that the scope of the best row identifier is the remainder of the current transaction.
A possible value for the column
SCOPE
in the ResultSet
object
returned by the method getBestRowIdentifier
.
Indicates that the best row identifier may or may not be a pseudo column.
A possible value for the column
PSEUDO_COLUMN
in the ResultSet
object
returned by the method getBestRowIdentifier
.
Indicates that the column might not allow NULL
values.
A possible value for the column
NULLABLE
in the ResultSet
returned by the method
getColumns
.
Indicates that the column definitely allows NULL
values.
A possible value for the column
NULLABLE
in the ResultSet
returned by the method
getColumns
.
Indicates that the nullability of columns is unknown.
A possible value for the column
NULLABLE
in the ResultSet
returned by the method
getColumns
.
Indicates that the parameter or column is an IN parameter.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getFunctionColumns
.
Indicates that the parameter or column is an INOUT parameter.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getFunctionColumns
.
Indicates that the parameter or column is an OUT parameter.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getFunctionColumns
.
Indicates that the parameter or column is a column in a result set.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getFunctionColumns
.
Indicates that type of the parameter or column is unknown.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getFunctionColumns
.
Indicates that NULL
values are not allowed.
A possible value for the column
NULLABLE
in the ResultSet
object
returned by the method getFunctionColumns
.
Indicates that the function does not return a table.
A possible value for column FUNCTION_TYPE
in the
ResultSet
object returned by the method
getFunctions
.
Indicates that NULL
values are allowed.
A possible value for the column
NULLABLE
in the ResultSet
object
returned by the method getFunctionColumns
.
Indicates that whether NULL
values are allowed
is unknown.
A possible value for the column
NULLABLE
in the ResultSet
object
returned by the method getFunctionColumns
.
Indicates that it is not known whether the function returns a result or a table.
A possible value for column FUNCTION_TYPE
in the
ResultSet
object returned by the method
getFunctions
.
Indicates that the parameter or column is a return value.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getFunctionColumns
.
Indicates that the function returns a table.
A possible value for column FUNCTION_TYPE
in the
ResultSet
object returned by the method
getFunctions
.
For the column UPDATE_RULE
,
indicates that
when the primary key is updated, the foreign key (imported key)
is changed to agree with it.
For the column DELETE_RULE
,
it indicates that
when the primary key is deleted, rows that imported that key
are deleted.
A possible value for the columns UPDATE_RULE
and DELETE_RULE
in the
ResultSet
objects returned by the methods
getImportedKeys
, getExportedKeys
,
and getCrossReference
.
Indicates deferrability. See SQL-92 for a definition.
A possible value for the column DEFERRABILITY
in the ResultSet
objects returned by the methods
getImportedKeys
, getExportedKeys
,
and getCrossReference
.
Indicates deferrability. See SQL-92 for a definition.
A possible value for the column DEFERRABILITY
in the ResultSet
objects returned by the methods
getImportedKeys
, getExportedKeys
,
and getCrossReference
.
For the columns UPDATE_RULE
and DELETE_RULE
, indicates that
if the primary key has been imported, it cannot be updated or deleted.
A possible value for the columns UPDATE_RULE
and DELETE_RULE
in the
ResultSet
objects returned by the methods
getImportedKeys
, getExportedKeys
,
and getCrossReference
.
Indicates deferrability. See SQL-92 for a definition.
A possible value for the column DEFERRABILITY
in the ResultSet
objects returned by the methods
getImportedKeys
, getExportedKeys
,
and getCrossReference
.
For the column UPDATE_RULE
, indicates that
a primary key may not be updated if it has been imported by
another table as a foreign key.
For the column DELETE_RULE
, indicates that
a primary key may not be deleted if it has been imported by
another table as a foreign key.
A possible value for the columns UPDATE_RULE
and DELETE_RULE
in the
ResultSet
objects returned by the methods
getImportedKeys
, getExportedKeys
,
and getCrossReference
.
For the columns UPDATE_RULE
and DELETE_RULE
, indicates that
if the primary key is updated or deleted, the foreign key (imported key)
is set to the default value.
A possible value for the columns UPDATE_RULE
and DELETE_RULE
in the
ResultSet
objects returned by the methods
getImportedKeys
, getExportedKeys
,
and getCrossReference
.
For the columns UPDATE_RULE
and DELETE_RULE
, indicates that
when the primary key is updated or deleted, the foreign key (imported key)
is changed to NULL
.
A possible value for the columns UPDATE_RULE
and DELETE_RULE
in the
ResultSet
objects returned by the methods
getImportedKeys
, getExportedKeys
,
and getCrossReference
.
Indicates that the column stores IN parameters.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getProcedureColumns
.
Indicates that the column stores INOUT parameters.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getProcedureColumns
.
Indicates that the column stores OUT parameters.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getProcedureColumns
.
Indicates that the column stores results.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getProcedureColumns
.
Indicates that the column stores return values.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getProcedureColumns
.
Indicates that type of the column is unknown.
A possible value for the column
COLUMN_TYPE
in the ResultSet
returned by the method getProcedureColumns
.
Indicates that NULL
values are not allowed.
A possible value for the column
NULLABLE
in the ResultSet
object
returned by the method getProcedureColumns
.
Indicates that the procedure does not return a result.
A possible value for column PROCEDURE_TYPE
in the
ResultSet
object returned by the method
getProcedures
.
Indicates that NULL
values are allowed.
A possible value for the column
NULLABLE
in the ResultSet
object
returned by the method getProcedureColumns
.
Indicates that whether NULL
values are allowed
is unknown.
A possible value for the column
NULLABLE
in the ResultSet
object
returned by the method getProcedureColumns
.
Indicates that it is not known whether the procedure returns a result.
A possible value for column PROCEDURE_TYPE
in the
ResultSet
object returned by the method
getProcedures
.
Indicates that the procedure returns a result.
A possible value for column PROCEDURE_TYPE
in the
ResultSet
object returned by the method
getProcedures
.
A possible return value for the method
DatabaseMetaData.getSQLStateType
which is used to indicate
whether the value returned by the method
SQLException.getSQLState
is an SQLSTATE value.
A possible return value for the method
DatabaseMetaData.getSQLStateType
which is used to indicate
whether the value returned by the method
SQLException.getSQLState
is an SQL99 SQLSTATE value.
Note:This constant remains only for compatibility reasons. Developers
should use the constant sqlStateSQL
instead.
A possible return value for the method
DatabaseMetaData.getSQLStateType
which is used to indicate
whether the value returned by the method
SQLException.getSQLState
is an
X/Open (now know as Open Group) SQL CLI SQLSTATE value.
Indicates that this table index is a clustered index.
A possible value for column TYPE
in the
ResultSet
object returned by the method
getIndexInfo
.
Indicates that this table index is a hashed index.
A possible value for column TYPE
in the
ResultSet
object returned by the method
getIndexInfo
.
Indicates that this table index is not a clustered index, a hashed index, or table statistics; it is something other than these.
A possible value for column TYPE
in the
ResultSet
object returned by the method
getIndexInfo
.
Indicates that this column contains table statistics that are returned in conjunction with a table's index descriptions.
A possible value for column TYPE
in the
ResultSet
object returned by the method
getIndexInfo
.
Indicates that a NULL
value is NOT allowed for this
data type.
A possible value for column NULLABLE
in the
ResultSet
object returned by the method
getTypeInfo
.
Indicates that a NULL
value is allowed for this
data type.
A possible value for column NULLABLE
in the
ResultSet
object returned by the method
getTypeInfo
.
Indicates that it is not known whether a NULL
value
is allowed for this data type.
A possible value for column NULLABLE
in the
ResultSet
object returned by the method
getTypeInfo
.
Indicates that the data type can be only be used in WHERE
search clauses
that do not use LIKE
predicates.
A possible value for column SEARCHABLE
in the
ResultSet
object returned by the method
getTypeInfo
.
Indicates that the data type
can be only be used in WHERE
search clauses
that use LIKE
predicates.
A possible value for column SEARCHABLE
in the
ResultSet
object returned by the method
getTypeInfo
.
Indicates that WHERE
search clauses are not supported
for this type.
A possible value for column SEARCHABLE
in the
ResultSet
object returned by the method
getTypeInfo
.
Indicates that all WHERE
search clauses can be
based on this type.
A possible value for column SEARCHABLE
in the
ResultSet
object returned by the method
getTypeInfo
.
Indicates that this version column is NOT a pseudo column.
A possible value for the column
PSEUDO_COLUMN
in the ResultSet
object
returned by the method getVersionColumns
.
Indicates that this version column is a pseudo column.
A possible value for the column
PSEUDO_COLUMN
in the ResultSet
object
returned by the method getVersionColumns
.
Indicates that this version column may or may not be a pseudo column.
A possible value for the column
PSEUDO_COLUMN
in the ResultSet
object
returned by the method getVersionColumns
.
Retrieves whether the current user can call all the procedures
returned by the method getProcedures
.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether the current user can use all the tables returned
by the method getTables
in a SELECT
statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a SQLException
while autoCommit is true
inidcates
that all open ResultSets are closed, even ones that are holdable. When a SQLException
occurs while
autocommit is true
, it is vendor specific whether the JDBC driver responds with a commit operation, a
rollback operation, or by doing neither a commit nor a rollback. A potential result of this difference
is in whether or not holdable ResultSets are closed.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a data definition statement within a transaction forces the transaction to commit.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database ignores a data definition statement within a transaction.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether or not a visible row delete can be detected by
calling the method ResultSet.rowDeleted
. If the method
deletesAreDetected
returns false
, it means that
deleted rows are removed from the result set.
type | the ResultSet type; one of
ResultSet.TYPE_FORWARD_ONLY ,
ResultSet.TYPE_SCROLL_INSENSITIVE , or
ResultSet.TYPE_SCROLL_SENSITIVE |
---|
true
if deletes are detected by the given result set type;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether the return value for the method
getMaxRowSize
includes the SQL data types
LONGVARCHAR
and LONGVARBINARY
.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves a description of the given attribute of the given type for a user-defined type (UDT) that is available in the given schema and catalog.
Descriptions are returned only for attributes of UDTs matching the
catalog, schema, type, and attribute name criteria. They are ordered by
TYPE_CAT
, TYPE_SCHEM
,
TYPE_NAME
and ORDINAL_POSITION
. This description
does not contain inherited attributes.
The ResultSet
object that is returned has the following
columns:
null
)
null
)
null
)
null
)
null
if DATA_TYPE isn't REF)
null
if DATA_TYPE isn't REF)
null
if the DATA_TYPE isn't REF)
null
if DATA_TYPE
isn't DISTINCT or user-generated REF)
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schemaPattern | a schema name pattern; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
typeNamePattern | a type name pattern; must match the type name as it is stored in the database |
attributeNamePattern | an attribute name pattern; must match the attribute name as it is declared in the database |
ResultSet
object in which each row is an
attribute descriptionSQLException | if a database access error occurs |
---|
Retrieves a description of a table's optimal set of columns that uniquely identifies a row. They are ordered by SCOPE.
Each column description has the following columns:
The COLUMN_SIZE column represents the specified column size for the given column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schema | a schema name; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
table | a table name; must match the table name as it is stored in the database |
scope | the scope of interest; use same values as SCOPE |
nullable | include columns that are nullable. |
ResultSet
- each row is a column descriptionSQLException | if a database access error occurs |
---|
Retrieves the String
that this database uses as the
separator between a catalog and table name.
SQLException | if a database access error occurs |
---|
Retrieves the database vendor's preferred term for "catalog".
SQLException | if a database access error occurs |
---|
Retrieves the catalog names available in this database. The results are ordered by catalog name.
The catalog column is:
ResultSet
object in which each row has a
single String
column that is a catalog nameSQLException | if a database access error occurs |
---|
Retrieves a list of the client info properties that the driver supports. The result set contains the following columns
The ResultSet
is sorted by the NAME column
ResultSet
object; each row is a supported client info
property
SQLException | if a database access error occurs |
---|
Retrieves a description of the access rights for a table's columns.
Only privileges matching the column name criteria are returned. They are ordered by COLUMN_NAME and PRIVILEGE.
Each privilige description has the following columns:
null
)
null
)
null
)
null
if unknown
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schema | a schema name; must match the schema name as it is
stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
table | a table name; must match the table name as it is stored in the database |
columnNamePattern | a column name pattern; must match the column name as it is stored in the database |
ResultSet
- each row is a column privilege descriptionSQLException | if a database access error occurs |
---|
Retrieves a description of table columns available in the specified catalog.
Only column descriptions matching the catalog, schema, table
and column name criteria are returned. They are ordered by
TABLE_CAT
,TABLE_SCHEM
,
TABLE_NAME
, and ORDINAL_POSITION
.
Each column description has the following columns:
null
)
null
)
NULL
values
NULL
values
null
)
null
)
null
if DATA_TYPE isn't REF)
null
if the DATA_TYPE isn't REF)
null
if the DATA_TYPE isn't REF)
null
if DATA_TYPE
isn't DISTINCT or user-generated REF)
The COLUMN_SIZE column the specified column size for the given column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schemaPattern | a schema name pattern; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
tableNamePattern | a table name pattern; must match the table name as it is stored in the database |
columnNamePattern | a column name pattern; must match the column name as it is stored in the database |
ResultSet
- each row is a column descriptionSQLException | if a database access error occurs |
---|
Retrieves the connection that produced this metadata object.
SQLException | if a database access error occurs |
---|
Retrieves a description of the foreign key columns in the given foreign key table that reference the primary key or the columns representing a unique constraint of the parent table (could be the same or a different table). The number of columns returned from the parent table must match the number of columns that make up the foreign key. They are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and KEY_SEQ.
Each foreign key column description has the following columns:
null
)
null
)
null
)
being exported (may be null
)
null
)
being exported (may be null
)
NULL
if
its parent key has been updated
NULL
if
its primary key has been deleted
null
)
null
)
parentCatalog | a catalog name; must match the catalog name
as it is stored in the database; "" retrieves those without a
catalog; null means drop catalog name from the selection criteria |
---|---|
parentSchema | a schema name; must match the schema name as
it is stored in the database; "" retrieves those without a schema;
null means drop schema name from the selection criteria |
parentTable | the name of the table that exports the key; must match the table name as it is stored in the database |
foreignCatalog | a catalog name; must match the catalog name as
it is stored in the database; "" retrieves those without a
catalog; null means drop catalog name from the selection criteria |
foreignSchema | a schema name; must match the schema name as it
is stored in the database; "" retrieves those without a schema;
null means drop schema name from the selection criteria |
foreignTable | the name of the table that imports the key; must match the table name as it is stored in the database |
ResultSet
- each row is a foreign key column descriptionSQLException | if a database access error occurs |
---|
Retrieves the major version number of the underlying database.
SQLException | if a database access error occurs |
---|
Retrieves the minor version number of the underlying database.
SQLException | if a database access error occurs |
---|
Retrieves the name of this database product.
SQLException | if a database access error occurs |
---|
Retrieves the version number of this database product.
SQLException | if a database access error occurs |
---|
Retrieves this database's default transaction isolation level. The
possible values are defined in java.sql.Connection
.
SQLException | if a database access error occurs |
---|
Retrieves this JDBC driver's major version number.
Retrieves this JDBC driver's minor version number.
Retrieves the name of this JDBC driver.
SQLException | if a database access error occurs |
---|
Retrieves the version number of this JDBC driver as a String
.
SQLException | if a database access error occurs |
---|
Retrieves a description of the foreign key columns that reference the given table's primary key columns (the foreign keys exported by a table). They are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and KEY_SEQ.
Each foreign key column description has the following columns:
null
)
null
)
null
)
being exported (may be null
)
null
)
being exported (may be null
)
NULL
if
its primary key has been updated
NULL
if
its primary key has been deleted
null
)
null
)
catalog | a catalog name; must match the catalog name as it
is stored in this database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schema | a schema name; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
table | a table name; must match the table name as it is stored in this database |
ResultSet
object in which each row is a
foreign key column descriptionSQLException | if a database access error occurs |
---|
Retrieves all the "extra" characters that can be used in unquoted identifier names (those beyond a-z, A-Z, 0-9 and _).
SQLException | if a database access error occurs |
---|
Retrieves a description of the given catalog's system or user function parameters and return type.
Only descriptions matching the schema, function and
parameter name criteria are returned. They are ordered by
FUNCTION_CAT
, FUNCTION_SCHEM
,
FUNCTION_NAME
and
SPECIFIC_ NAME
. Within this, the return value,
if any, is first. Next are the parameter descriptions in call
order. The column descriptions follow in column number order.
Each row in the ResultSet
is a parameter description, column description or
return type description with the following fields:
null
)
null
)
ResultSet
FUNCTION_NAME
for example with overload functions
The PRECISION column represents the specified column size for the given parameter or column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schemaPattern | a schema name pattern; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
functionNamePattern | a procedure name pattern; must match the function name as it is stored in the database |
columnNamePattern | a parameter name pattern; must match the parameter or column name as it is stored in the database |
ResultSet
- each row describes a
user function parameter, column or return typeSQLException | if a database access error occurs |
---|
Retrieves a description of the system and user functions available in the given catalog.
Only system and user function descriptions matching the schema and
function name criteria are returned. They are ordered by
FUNCTION_CAT
, FUNCTION_SCHEM
,
FUNCTION_NAME
and
SPECIFIC_ NAME
.
Each function description has the the following columns:
null
)
null
)
FUNCTION_NAME
for example with overload functions
A user may not have permission to execute any of the functions that are
returned by getFunctions
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schemaPattern | a schema name pattern; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
functionNamePattern | a function name pattern; must match the function name as it is stored in the database |
ResultSet
- each row is a function descriptionSQLException | if a database access error occurs |
---|
Retrieves the string used to quote SQL identifiers. This method returns a space " " if identifier quoting is not supported.
SQLException | if a database access error occurs |
---|
Retrieves a description of the primary key columns that are referenced by the given table's foreign key columns (the primary keys imported by a table). They are ordered by PKTABLE_CAT, PKTABLE_SCHEM, PKTABLE_NAME, and KEY_SEQ.
Each primary key column description has the following columns:
null
)
null
)
null
)
null
)
NULL
if its primary key has been updated
null
)
null
)
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schema | a schema name; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
table | a table name; must match the table name as it is stored in the database |
ResultSet
- each row is a primary key column descriptionSQLException | if a database access error occurs |
---|
Retrieves a description of the given table's indices and statistics. They are ordered by NON_UNIQUE, TYPE, INDEX_NAME, and ORDINAL_POSITION.
Each index column description has the following columns:
null
)
null
)
null
);
null
when TYPE is tableIndexStatistic
null
when TYPE is
tableIndexStatistic
null
when TYPE is
tableIndexStatistic
null
if sort sequence is not supported;
null
when TYPE is tableIndexStatistic
null
)
catalog | a catalog name; must match the catalog name as it
is stored in this database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schema | a schema name; must match the schema name
as it is stored in this database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
table | a table name; must match the table name as it is stored in this database |
unique | when true, return only indices for unique values; when false, return indices regardless of whether unique or not |
approximate | when true, result is allowed to reflect approximate or out of data values; when false, results are requested to be accurate |
ResultSet
- each row is an index column descriptionSQLException | if a database access error occurs |
---|
Retrieves the major JDBC version number for this driver.
SQLException | if a database access error occurs |
---|
Retrieves the minor JDBC version number for this driver.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of hex characters this database allows in an inline binary literal.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of characters that this database allows in a catalog name.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of characters this database allows for a character literal.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of characters this database allows for a column name.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of columns this database allows in a
GROUP BY
clause.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of columns this database allows in an index.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of columns this database allows in an
ORDER BY
clause.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of columns this database allows in a
SELECT
list.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of columns this database allows in a table.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of concurrent connections to this database that are possible.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of characters that this database allows in a cursor name.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of bytes this database allows for an index, including all of the parts of the index.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of characters that this database allows in a procedure name.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of bytes this database allows in a single row.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of characters that this database allows in a schema name.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of characters this database allows in an SQL statement.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of active statements to this database that can be open at the same time.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of characters this database allows in a table name.
SQLException | if a database access error occurs |
---|
Retrieves the maximum number of tables this database allows in a
SELECT
statement.
SELECT
statement; a result of zero means that there is no limit or
the limit is not knownSQLException | if a database access error occurs |
---|
Retrieves the maximum number of characters this database allows in a user name.
SQLException | if a database access error occurs |
---|
Retrieves a comma-separated list of math functions available with this database. These are the Open /Open CLI math function names used in the JDBC function escape clause.
SQLException | if a database access error occurs |
---|
Retrieves a description of the given table's primary key columns. They are ordered by COLUMN_NAME.
Each primary key column description has the following columns:
null
)
null
)
null
)
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schema | a schema name; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
table | a table name; must match the table name as it is stored in the database |
ResultSet
- each row is a primary key column descriptionSQLException | if a database access error occurs |
---|
Retrieves a description of the given catalog's stored procedure parameter and result columns.
Only descriptions matching the schema, procedure and parameter name criteria are returned. They are ordered by PROCEDURE_CAT, PROCEDURE_SCHEM, PROCEDURE_NAME and SPECIFIC_NAME. Within this, the return value, if any, is first. Next are the parameter descriptions in call order. The column descriptions follow in column number order.
Each row in the ResultSet
is a parameter description or
column description with the following fields:
null
)
null
)
ResultSet
null
)
Note: Some databases may not return the column descriptions for a procedure.
The PRECISION column represents the specified column size for the given column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schemaPattern | a schema name pattern; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
procedureNamePattern | a procedure name pattern; must match the procedure name as it is stored in the database |
columnNamePattern | a column name pattern; must match the column name as it is stored in the database |
ResultSet
- each row describes a stored procedure parameter or
columnSQLException | if a database access error occurs |
---|
Retrieves the database vendor's preferred term for "procedure".
SQLException | if a database access error occurs |
---|
Retrieves a description of the stored procedures available in the given catalog.
Only procedure descriptions matching the schema and
procedure name criteria are returned. They are ordered by
PROCEDURE_CAT
, PROCEDURE_SCHEM
,
PROCEDURE_NAME
and SPECIFIC_ NAME
.
Each procedure description has the the following columns:
null
)
null
)
A user may not have permissions to execute any of the procedures that are
returned by getProcedures
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schemaPattern | a schema name pattern; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
procedureNamePattern | a procedure name pattern; must match the procedure name as it is stored in the database |
ResultSet
- each row is a procedure descriptionSQLException | if a database access error occurs |
---|
Retrieves this database's default holdability for ResultSet
objects.
ResultSet.HOLD_CURSORS_OVER_COMMIT
or
ResultSet.CLOSE_CURSORS_AT_COMMIT
SQLException | if a database access error occurs |
---|
Indicates whether or not this data source supports the SQL ROWID
type,
and if so the lifetime for which a RowId
object remains valid.
The returned int values have the following relationship:
ROWID_UNSUPPORTED < ROWID_VALID_OTHER < ROWID_VALID_TRANSACTION < ROWID_VALID_SESSION < ROWID_VALID_FOREVERso conditional logic such as
if (metadata.getRowIdLifetime() > DatabaseMetaData.ROWID_VALID_TRANSACTION)can be used. Valid Forever means valid across all Sessions, and valid for a Session means valid across all its contained Transactions.
RowId
SQLException | if a database access error occurs |
---|
Retrieves a comma-separated list of all of this database's SQL keywords that are NOT also SQL:2003 keywords.
SQLException | if a database access error occurs |
---|
Indicates whether the SQLSTATE returned by SQLException.getSQLState
is X/Open (now known as Open Group) SQL CLI or SQL:2003.
SQLException | if a database access error occurs |
---|
Retrieves the database vendor's preferred term for "schema".
SQLException | if a database access error occurs |
---|
Retrieves the schema names available in this database. The results
are ordered by TABLE_CATALOG
and
TABLE_SCHEM
.
The schema columns are:
null
)
catalog | a catalog name; must match the catalog name as it is stored in the database;"" retrieves those without a catalog; null means catalog name should not be used to narrow down the search. |
---|---|
schemaPattern | a schema name; must match the schema name as it is stored in the database; null means schema name should not be used to narrow down the search. |
ResultSet
object in which each row is a
schema descriptionSQLException | if a database access error occurs |
---|
Retrieves the schema names available in this database. The results
are ordered by TABLE_CATALOG
and
TABLE_SCHEM
.
The schema columns are:
null
)
ResultSet
object in which each row is a
schema descriptionSQLException | if a database access error occurs |
---|
Retrieves the string that can be used to escape wildcard characters. This is the string that can be used to escape '_' or '%' in the catalog search parameters that are a pattern (and therefore use one of the wildcard characters).
The '_' character represents any single character; the '%' character represents any sequence of zero or more characters.
SQLException | if a database access error occurs |
---|
Retrieves a comma-separated list of string functions available with this database. These are the Open Group CLI string function names used in the JDBC function escape clause.
SQLException | if a database access error occurs |
---|
Retrieves a description of the table hierarchies defined in a particular schema in this database.
Only supertable information for tables matching the catalog, schema and table name are returned. The table name parameter may be a fully- qualified name, in which case, the catalog and schemaPattern parameters are ignored. If a table does not have a super table, it is not listed here. Supertables have to be defined in the same catalog and schema as the sub tables. Therefore, the type description does not need to include this information for the supertable.
Each type description has the following columns:
null
)
null
)
Note: If the driver does not support type hierarchies, an empty result set is returned.
catalog | a catalog name; "" retrieves those without a catalog;
null means drop catalog name from the selection criteria |
---|---|
schemaPattern | a schema name pattern; "" retrieves those without a schema |
tableNamePattern | a table name pattern; may be a fully-qualified name |
ResultSet
object in which each row is a type descriptionSQLException | if a database access error occurs |
---|
Retrieves a description of the user-defined type (UDT) hierarchies defined in a particular schema in this database. Only the immediate super type/ sub type relationship is modeled.
Only supertype information for UDTs matching the catalog, schema, and type name is returned. The type name parameter may be a fully-qualified name. When the UDT name supplied is a fully-qualified name, the catalog and schemaPattern parameters are ignored.
If a UDT does not have a direct super type, it is not listed here.
A row of the ResultSet
object returned by this method
describes the designated UDT and a direct supertype. A row has the following
columns:
null
)
null
)
null
)
null
)
Note: If the driver does not support type hierarchies, an empty result set is returned.
catalog | a catalog name; "" retrieves those without a catalog;
null means drop catalog name from the selection criteria |
---|---|
schemaPattern | a schema name pattern; "" retrieves those without a schema |
typeNamePattern | a UDT name pattern; may be a fully-qualified name |
ResultSet
object in which a row gives information
about the designated UDTSQLException | if a database access error occurs |
---|
Retrieves a comma-separated list of system functions available with this database. These are the Open Group CLI system function names used in the JDBC function escape clause.
SQLException | if a database access error occurs |
---|
Retrieves a description of the access rights for each table available in a catalog. Note that a table privilege applies to one or more columns in the table. It would be wrong to assume that this privilege applies to all columns (this may be true for some systems but is not true for all.)
Only privileges matching the schema and table name
criteria are returned. They are ordered by
TABLE_CAT
,
TABLE_SCHEM
, TABLE_NAME
,
and PRIVILEGE
.
Each privilige description has the following columns:
null
)
null
)
null
)
null
if unknown
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schemaPattern | a schema name pattern; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
tableNamePattern | a table name pattern; must match the table name as it is stored in the database |
ResultSet
- each row is a table privilege descriptionSQLException | if a database access error occurs |
---|
Retrieves the table types available in this database. The results are ordered by table type.
The table type is:
ResultSet
object in which each row has a
single String
column that is a table typeSQLException | if a database access error occurs |
---|
Retrieves a description of the tables available in the given catalog.
Only table descriptions matching the catalog, schema, table
name and type criteria are returned. They are ordered by
TABLE_TYPE
, TABLE_CAT
,
TABLE_SCHEM
and TABLE_NAME
.
Each table description has the following columns:
null
)
null
)
null
)
null
)
null
)
null
)
null
)
Note: Some databases may not return information for all tables.
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schemaPattern | a schema name pattern; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
tableNamePattern | a table name pattern; must match the table name as it is stored in the database |
types | a list of table types, which must be from the list of table types
returned from getTableTypes() ,to include; null returns
all types |
ResultSet
- each row is a table descriptionSQLException | if a database access error occurs |
---|
Retrieves a comma-separated list of the time and date functions available with this database.
SQLException | if a database access error occurs |
---|
Retrieves a description of all the data types supported by this database. They are ordered by DATA_TYPE and then by how closely the data type maps to the corresponding JDBC SQL type.
If the database supports SQL distinct types, then getTypeInfo() will return a single row with a TYPE_NAME of DISTINCT and a DATA_TYPE of Types.DISTINCT. If the database supports SQL structured types, then getTypeInfo() will return a single row with a TYPE_NAME of STRUCT and a DATA_TYPE of Types.STRUCT.
If SQL distinct or structured types are supported, then information on the individual types may be obtained from the getUDTs() method.
Each type description has the following columns:
null
)
null
)
null
)
null
)
The PRECISION column represents the maximum column size that the server supports for the given datatype. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
ResultSet
object in which each row is an SQL
type descriptionSQLException | if a database access error occurs |
---|
Retrieves a description of the user-defined types (UDTs) defined
in a particular schema. Schema-specific UDTs may have type
JAVA_OBJECT
, STRUCT
,
or DISTINCT
.
Only types matching the catalog, schema, type name and type
criteria are returned. They are ordered by DATA_TYPE
,
TYPE_CAT
, TYPE_SCHEM
and
TYPE_NAME
. The type name parameter may be a fully-qualified
name. In this case, the catalog and schemaPattern parameters are
ignored.
Each type description has the following columns:
null
)
null
)
null
if DATA_TYPE is not
DISTINCT or not STRUCT with REFERENCE_GENERATION = USER_DEFINED)
Note: If the driver does not support UDTs, an empty result set is returned.
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schemaPattern | a schema pattern name; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
typeNamePattern | a type name pattern; must match the type name as it is stored in the database; may be a fully qualified name |
types | a list of user-defined types (JAVA_OBJECT,
STRUCT, or DISTINCT) to include; null returns all types |
ResultSet
object in which each row describes a UDTSQLException | if a database access error occurs |
---|
Retrieves the URL for this DBMS.
null
if it cannot be
generatedSQLException | if a database access error occurs |
---|
Retrieves the user name as known to this database.
SQLException | if a database access error occurs |
---|
Retrieves a description of a table's columns that are automatically updated when any value in a row is updated. They are unordered.
Each column description has the following columns:
java.sql.Types
The COLUMN_SIZE column represents the specified column size for the given column. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. Null is returned for data types where the column size is not applicable.
catalog | a catalog name; must match the catalog name as it
is stored in the database; "" retrieves those without a catalog;
null means that the catalog name should not be used to narrow
the search |
---|---|
schema | a schema name; must match the schema name
as it is stored in the database; "" retrieves those without a schema;
null means that the schema name should not be used to narrow
the search |
table | a table name; must match the table name as it is stored in the database |
ResultSet
object in which each row is a
column descriptionSQLException | if a database access error occurs |
---|
Retrieves whether or not a visible row insert can be detected
by calling the method ResultSet.rowInserted
.
type | the ResultSet type; one of
ResultSet.TYPE_FORWARD_ONLY ,
ResultSet.TYPE_SCROLL_INSENSITIVE , or
ResultSet.TYPE_SCROLL_SENSITIVE |
---|
true
if changes are detected by the specified result
set type; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a catalog appears at the start of a fully qualified table name. If not, the catalog appears at the end.
true
if the catalog name appears at the beginning
of a fully qualified table name; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database is in read-only mode.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Indicates whether updates made to a LOB are made on a copy or directly to the LOB.
true
if updates are made to a copy of the LOB;
false
if updates are made directly to the LOBSQLException | if a database access error occurs |
---|
Retrieves whether this database supports concatenations between
NULL
and non-NULL
values being
NULL
.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether NULL
values are sorted at the end regardless of
sort order.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether NULL
values are sorted at the start regardless
of sort order.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether NULL
values are sorted high.
Sorted high means that NULL
values
sort higher than any other value in a domain. In an ascending order,
if this method returns true
, NULL
values
will appear at the end. By contrast, the method
nullsAreSortedAtEnd
indicates whether NULL
values
are sorted at the end regardless of sort order.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether NULL
values are sorted low.
Sorted low means that NULL
values
sort lower than any other value in a domain. In an ascending order,
if this method returns true
, NULL
values
will appear at the beginning. By contrast, the method
nullsAreSortedAtStart
indicates whether NULL
values
are sorted at the beginning regardless of sort order.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether deletes made by others are visible.
type | the ResultSet type; one of
ResultSet.TYPE_FORWARD_ONLY ,
ResultSet.TYPE_SCROLL_INSENSITIVE , or
ResultSet.TYPE_SCROLL_SENSITIVE |
---|
true
if deletes made by others
are visible for the given result set type;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether inserts made by others are visible.
type | the ResultSet type; one of
ResultSet.TYPE_FORWARD_ONLY ,
ResultSet.TYPE_SCROLL_INSENSITIVE , or
ResultSet.TYPE_SCROLL_SENSITIVE |
---|
true
if inserts made by others
are visible for the given result set type;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether updates made by others are visible.
type | the ResultSet type; one of
ResultSet.TYPE_FORWARD_ONLY ,
ResultSet.TYPE_SCROLL_INSENSITIVE , or
ResultSet.TYPE_SCROLL_SENSITIVE |
---|
true
if updates made by others
are visible for the given result set type;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a result set's own deletes are visible.
type | the ResultSet type; one of
ResultSet.TYPE_FORWARD_ONLY ,
ResultSet.TYPE_SCROLL_INSENSITIVE , or
ResultSet.TYPE_SCROLL_SENSITIVE |
---|
true
if deletes are visible for the given result set type;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a result set's own inserts are visible.
type | the ResultSet type; one of
ResultSet.TYPE_FORWARD_ONLY ,
ResultSet.TYPE_SCROLL_INSENSITIVE , or
ResultSet.TYPE_SCROLL_SENSITIVE |
---|
true
if inserts are visible for the given result set type;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether for the given type of ResultSet
object,
the result set's own updates are visible.
type | the ResultSet type; one of
ResultSet.TYPE_FORWARD_ONLY ,
ResultSet.TYPE_SCROLL_INSENSITIVE , or
ResultSet.TYPE_SCROLL_SENSITIVE |
---|
true
if updates are visible for the given result set type;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in lower case.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in lower case.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in mixed case.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in mixed case.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in upper case.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in upper case.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the ANSI92 entry level SQL grammar.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the ANSI92 full SQL grammar supported.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the ANSI92 intermediate SQL grammar supported.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports ALTER TABLE
with add column.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports ALTER TABLE
with drop column.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports batch updates.
true
if this database supports batch upcates;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a catalog name can be used in a data manipulation statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a catalog name can be used in an index definition statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a catalog name can be used in a privilege definition statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a catalog name can be used in a procedure call statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a catalog name can be used in a table definition statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports column aliasing.
If so, the SQL AS clause can be used to provide names for computed columns or to provide alias names for columns as required.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the JDBC scalar function
CONVERT
for conversions between the JDBC types fromType
and toType. The JDBC types are the generic SQL data types defined
in java.sql.Types
.
fromType | the type to convert from; one of the type codes from
the class java.sql.Types |
---|---|
toType | the type to convert to; one of the type codes from
the class java.sql.Types |
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the JDBC scalar function
CONVERT
for the conversion of one JDBC type to another.
The JDBC types are the generic SQL data types defined
in java.sql.Types
.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the ODBC Core SQL grammar.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports correlated subqueries.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports both data definition and data manipulation statements within a transaction.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports only data manipulation statements within a transaction.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether, when table correlation names are supported, they are restricted to being different from the names of the tables.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports expressions in
ORDER BY
lists.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the ODBC Extended SQL grammar.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports full nested outer joins.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether auto-generated keys can be retrieved after a statement has been executed
true
if auto-generated keys can be retrieved
after a statement has executed; false
otherwise
If true
is returned, the JDBC driver must support the
returning of auto-generated keys for at least SQL INSERT statements
SQLException | if a database access error occurs |
---|
Retrieves whether this database supports some form of
GROUP BY
clause.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports using columns not included in
the SELECT
statement in a GROUP BY
clause
provided that all of the columns in the SELECT
statement
are included in the GROUP BY
clause.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports using a column that is
not in the SELECT
statement in a
GROUP BY
clause.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the SQL Integrity Enhancement Facility.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports specifying a
LIKE
escape clause.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database provides limited support for outer
joins. (This will be true
if the method
supportsFullOuterJoins
returns true
).
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the ODBC Minimum SQL grammar.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database treats mixed case unquoted SQL identifiers as case sensitive and as a result stores them in mixed case.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database treats mixed case quoted SQL identifiers as case sensitive and as a result stores them in mixed case.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether it is possible to have multiple ResultSet
objects
returned from a CallableStatement
object
simultaneously.
true
if a CallableStatement
object
can return multiple ResultSet
objects
simultaneously; false
otherwiseSQLException | if a datanase access error occurs |
---|
Retrieves whether this database supports getting multiple
ResultSet
objects from a single call to the
method execute
.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database allows having multiple transactions open at once (on different connections).
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports named parameters to callable statements.
true
if named parameters are supported;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether columns in this database may be defined as non-nullable.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports keeping cursors open across commits.
true
if cursors always remain open;
false
if they might not remain openSQLException | if a database access error occurs |
---|
Retrieves whether this database supports keeping cursors open across rollbacks.
true
if cursors always remain open;
false
if they might not remain openSQLException | if a database access error occurs |
---|
Retrieves whether this database supports keeping statements open across commits.
true
if statements always remain open;
false
if they might not remain openSQLException | if a database access error occurs |
---|
Retrieves whether this database supports keeping statements open across rollbacks.
true
if statements always remain open;
false
if they might not remain openSQLException | if a database access error occurs |
---|
Retrieves whether this database supports using a column that is
not in the SELECT
statement in an
ORDER BY
clause.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports some form of outer join.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports positioned DELETE
statements.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports positioned UPDATE
statements.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the given concurrency type in combination with the given result set type.
type | defined in java.sql.ResultSet |
---|---|
concurrency | type defined in java.sql.ResultSet |
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the given result set holdability.
holdability | one of the following constants:
ResultSet.HOLD_CURSORS_OVER_COMMIT or
ResultSet.CLOSE_CURSORS_AT_COMMIT |
---|
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the given result set type.
type | defined in java.sql.ResultSet |
---|
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports savepoints.
true
if savepoints are supported;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a schema name can be used in a data manipulation statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a schema name can be used in an index definition statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a schema name can be used in a privilege definition statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a schema name can be used in a procedure call statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether a schema name can be used in a table definition statement.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports SELECT FOR UPDATE
statements.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports statement pooling.
true
if so; false
otherwiseif a database access error occurs | |
SQLException |
Retrieves whether this database supports invoking user-defined or vendor functions using the stored procedure escape syntax.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports stored procedure calls that use the stored procedure escape syntax.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports subqueries in comparison expressions.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports subqueries in
EXISTS
expressions.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports subqueries in
IN
expressions.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports subqueries in quantified expressions.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports table correlation names.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports the given transaction isolation level.
level | one of the transaction isolation levels defined in
java.sql.Connection |
---|
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports transactions. If not, invoking the
method commit
is a noop, and the isolation level is
TRANSACTION_NONE
.
true
if transactions are supported;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports SQL UNION
.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database supports SQL UNION ALL
.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether or not a visible row update can be detected by
calling the method ResultSet.rowUpdated
.
type | the ResultSet type; one of
ResultSet.TYPE_FORWARD_ONLY ,
ResultSet.TYPE_SCROLL_INSENSITIVE , or
ResultSet.TYPE_SCROLL_SENSITIVE |
---|
true
if changes are detected by the result set type;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database uses a file for each table.
true
if this database uses a local file for each table;
false
otherwiseSQLException | if a database access error occurs |
---|
Retrieves whether this database stores tables in a local file.
true
if so; false
otherwiseSQLException | if a database access error occurs |
---|