org.jooq

Interface AlterTableAlterStep<T>

public interface AlterTableAlterStep<T>

The step in the ALTER TABLE DSL used to ALTER columns.

Referencing XYZ*Step types directly from client code

It is usually not recommended to reference any XYZ*Step types directly from client code, or assign them to local variables. When writing dynamic SQL, creating a statement's components dynamically, and passing them to the DSL API statically is usually a better choice. See the manual's section about dynamic SQL for details: https://www.jooq.org/doc/latest/manual/sql-building/dynamic-sql.

Drawbacks of referencing the XYZ*Step types directly:

• They're operating on mutable implementations (as of jOOQ 3.x)
• They're less composable and not easy to get right when dynamic SQL gets complex
• They're less readable
• They might have binary incompatible changes between minor releases

Author:

Lukas Eder

Method Summary

Modifier and Type	Method and Description
AlterTableFinalStep	defaultValue(Field<T> expression) Specify a new column DEFAULT.
AlterTableFinalStep	defaultValue(T literal) Specify a new column DEFAULT.
AlterTableFinalStep	dropNotNull() Make the column nullable.
AlterTableFinalStep	set(DataType<?> type) Specify a new column data type.
AlterTableFinalStep	setNotNull() Make the column NOT NULL.

Method Detail

defaultValue

@Support(value={ACCESS,ASE,AURORA_MYSQL,AURORA_POSTGRES,CUBRID,DB2,DERBY,FIREBIRD,H2,HSQLDB,INGRES,MARIADB,MYSQL,ORACLE,POSTGRES,SQLITE,SQLSERVER,SYBASE})
AlterTableFinalStep defaultValue(T literal)

Specify a new column DEFAULT.

defaultValue

@Support(value={ACCESS,ASE,AURORA_MYSQL,AURORA_POSTGRES,CUBRID,DB2,DERBY,FIREBIRD,H2,HSQLDB,INGRES,MARIADB,MYSQL,ORACLE,POSTGRES,SQLITE,SQLSERVER,SYBASE})
AlterTableFinalStep defaultValue(Field<T> expression)

Specify a new column DEFAULT.

set

@Support(value={ACCESS,ASE,AURORA_MYSQL,AURORA_POSTGRES,CUBRID,DB2,DERBY,FIREBIRD,H2,HSQLDB,INFORMIX,INGRES,MARIADB,MYSQL,ORACLE,POSTGRES,SQLITE,SQLSERVER,SYBASE})
AlterTableFinalStep set(DataType<?> type)

Specify a new column data type.

This adds or removes NOT NULL constraints on the column if DataType.nullable() is specified explicitly (not all databases support this).

setNotNull

@Support(value={AURORA_POSTGRES,DB2,DERBY,H2,HSQLDB,POSTGRES})
AlterTableFinalStep setNotNull()

Make the column NOT NULL.

dropNotNull

@Support(value={AURORA_POSTGRES,DB2,DERBY,H2,HSQLDB,POSTGRES})
AlterTableFinalStep dropNotNull()

Make the column nullable.