java.sql.DatabaseMetaData是数据库对象定义接口。
表 1 对java.sql.DatabaseMetaData的支持情况
方法名 | 返回值类型 | 支持JDBC 4 |
|---|
getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types) | ResultSet | Yes |
getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) | ResultSet | Yes |
getTableTypes() | ResultSet | Yes |
getUserName() | String | Yes |
isReadOnly() | boolean | Yes |
nullsAreSortedHigh() | boolean | Yes |
nullsAreSortedLow() | boolean | Yes |
nullsAreSortedAtStart() | boolean | Yes |
nullsAreSortedAtEnd() | boolean | Yes |
getDatabaseProductName() | String | Yes |
getDatabaseProductVersion() | String | Yes |
getDriverName() | String | Yes |
getDriverVersion() | String | Yes |
getDriverMajorVersion() | int | Yes |
getDriverMinorVersion() | int | Yes |
usesLocalFiles() | boolean | Yes |
usesLocalFilePerTable() | boolean | Yes |
supportsMixedCaseIdentifiers() | boolean | Yes |
storesUpperCaseIdentifiers() | boolean | Yes |
storesLowerCaseIdentifiers() | boolean | Yes |
supportsMixedCaseQuotedIdentifiers() | boolean | Yes |
storesUpperCaseQuotedIdentifiers() | boolean | Yes |
storesLowerCaseQuotedIdentifiers() | boolean | Yes |
storesMixedCaseQuotedIdentifiers() | boolean | Yes |
supportsAlterTableWithAddColumn() | boolean | Yes |
supportsAlterTableWithDropColumn() | boolean | Yes |
supportsColumnAliasing() | boolean | Yes |
nullPlusNonNullIsNull() | boolean | Yes |
supportsConvert() | boolean | Yes |
supportsConvert(int fromType, int toType) | boolean | Yes |
supportsTableCorrelationNames() | boolean | Yes |
supportsDifferentTableCorrelationNames() | boolean | Yes |
supportsExpressionsInOrderBy() | boolean | Yes |
supportsOrderByUnrelated() | boolean | Yes |
supportsGroupBy() | boolean | Yes |
supportsGroupByUnrelated() | boolean | Yes |
supportsGroupByBeyondSelect() | boolean | Yes |
supportsLikeEscapeClause() | boolean | Yes |
supportsMultipleResultSets() | boolean | Yes |
supportsMultipleTransactions() | boolean | Yes |
supportsNonNullableColumns() | boolean | Yes |
supportsMinimumSQLGrammar() | boolean | Yes |
supportsCoreSQLGrammar() | boolean | Yes |
supportsExtendedSQLGrammar() | boolean | Yes |
supportsANSI92EntryLevelSQL() | boolean | Yes |
supportsANSI92IntermediateSQL() | boolean | Yes |
supportsANSI92FullSQL() | boolean | Yes |
supportsIntegrityEnhancementFacility() | boolean | Yes |
supportsOuterJoins() | boolean | Yes |
supportsFullOuterJoins() | boolean | Yes |
supportsLimitedOuterJoins() | boolean | Yes |
isCatalogAtStart() | boolean | Yes |
supportsSchemasInDataManipulation() | boolean | Yes |
supportsSavepoints() | boolean | Yes |
supportsResultSetHoldability(int holdability) | boolean | Yes |
getResultSetHoldability() | int | Yes |
getDatabaseMajorVersion() | int | Yes |
getDatabaseMinorVersion() | int | Yes |
getJDBCMajorVersion() | int | Yes |
getJDBCMinorVersion() | int | Yes |
openGauss 2024-12-22 00:52:38