Interface AlterTableSupport

All Known Implementing Classes:

AbstractSybaseDialect, AbstractTransactSQLDialect, AzureSQLServerDialect, CockroachDB202SpatialDialect, CockroachDialect, DB2Dialect, DB2iDialect, DB2SpatialDialect, DB2zDialect, DelegatingAlterTableSupport, Dialect, GenericDialect, H2Dialect, HANADialect, HANASpatialDialect, HSQLDialect, MariaDBDialect, MySQL56InnoDBSpatialDialect, MySQL56SpatialDialect, MySQL5InnoDBSpatialDialect, MySQL5SpatialDialect, MySQLDialect, MySQLSpatialDialect, OracleDialect, OracleSpatial10gDialect, OracleSpatialSDO10gDialect, PostgisPG10Dialect, PostgisPG93Dialect, PostgisPG94Dialect, PostgisPG95Dialect, PostgresPlusDialect, PostgreSQLDialect, SpannerDialect, SpannerPostgreSQLDialect, SQLServerDialect, SqlServerSpatialDialect, SybaseASEDialect, SybaseDialect

@SPI({USE,IMPLEMENT,SUPPLY})
public interface AlterTableSupport

Renders alter-table and add-column grammar.

Return null from alterColumnType(AlterColumnTypeRequest) when in-place type alteration is not supported. Returned fragments are consumed verbatim and must not depend on retained request state.

Since:

8.0

See Also:

• Dialect.getAlterTableSupport()

Method Summary

Modifier and Type	Method	Description
default String	addColumnPrefix()
default String	addColumnSuffix()
default String	alterColumnType(AlterColumnTypeRequest request)
default String	alterTableCommand(String tableName, ExistenceCheckPlacement ifExistsPlacement)

Method Details

alterTableCommand

default String alterTableCommand(String tableName,
 ExistenceCheckPlacement ifExistsPlacement)

addColumnPrefix

default String addColumnPrefix()

addColumnSuffix

default String addColumnSuffix()

alterColumnType

@Nullable
default String alterColumnType(AlterColumnTypeRequest request)