postgres alter table add constraint

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postgres alter table add constraint

對於父資料表的所有CHECK 限制條件,必須還有相對應的子資料表限制條件,除非父資料表中標記為不可繼承(即使用ALTER TABLE ... ADD CONSTRAINT . ,Indexes and table constraints involving the column will be automatically dropped as well. ... ADD GENERATED ALWAYS | BY DEFAULT } AS IDENTITY ,SET TABLESPACE new_tablespace [ NOWAIT ] ALTER TABLE [ IF EXISTS ] name ... ADD table_constraint_using_index ALTER CONSTRAINT constraint_name ... Indexes and table constraints involving the column will be automatically ... ,Indexes and table constraints involving the column will be automatically dropped as ... For example, it is possible to add several columns and/or alter the type of ... ,Indexes and table constraints involving the column will be automatically dropped as ... For example, it is possible to add several columns and/or alter the type of ... ,Indexes and table constraints involving the column will be automatically dropped ... To add a column or alter a column type or use the OF clause, you must also ... ,SET TABLESPACE new_tablespace [ NOWAIT ] where action is one of: ADD ... Indexes and table constraints involving the column will be automatically dropped ... , Name. ALTER TABLE -- change the definition of a table ... [ NOT VALID ] ADD table_constraint_using_index ALTER CONSTRAINT ... Indexes and table constraints involving the column will be automatically dropped as well.,Introduction to PostgreSQL ALTER TABLE statement. Add a column, drop a column, rename a column, or change a column's data type. Set a default value for the column. Add a CHECK constraint to a column. Rename a table. ,PostgreSQL的ALTER TABLE命令用來添加,刪除,或修改現有表中的列。 還可以 ... ALTER TABLE table_name ADD CONSTRAINT MyUniqueConstraint ...

相關軟體 PostgreSQL 資訊

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postgres alter table add constraint 相關參考資料
ALTER TABLE - PostgreSQL 正體中文使用手冊

對於父資料表的所有CHECK 限制條件,必須還有相對應的子資料表限制條件,除非父資料表中標記為不可繼承(即使用ALTER TABLE ... ADD CONSTRAINT .

https://docs.postgresql.tw

Documentation: 10: ALTER TABLE - PostgreSQL

Indexes and table constraints involving the column will be automatically dropped as well. ... ADD GENERATED ALWAYS | BY DEFAULT } AS IDENTITY

https://www.postgresql.org

Documentation: 12: ALTER TABLE - PostgreSQL

SET TABLESPACE new_tablespace [ NOWAIT ] ALTER TABLE [ IF EXISTS ] name ... ADD table_constraint_using_index ALTER CONSTRAINT constraint_name ... Indexes and table constraints involving the column wil...

https://www.postgresql.org

Documentation: 8.2: ALTER TABLE - PostgreSQL

Indexes and table constraints involving the column will be automatically dropped as ... For example, it is possible to add several columns and/or alter the type of ...

https://www.postgresql.org

Documentation: 9.1: ALTER TABLE - PostgreSQL

Indexes and table constraints involving the column will be automatically dropped as ... For example, it is possible to add several columns and/or alter the type of ...

https://www.postgresql.org

Documentation: 9.3: ALTER TABLE - PostgreSQL

Indexes and table constraints involving the column will be automatically dropped ... To add a column or alter a column type or use the OF clause, you must also ...

https://www.postgresql.org

Documentation: 9.4: ALTER TABLE - PostgreSQL

SET TABLESPACE new_tablespace [ NOWAIT ] where action is one of: ADD ... Indexes and table constraints involving the column will be automatically dropped ...

https://www.postgresql.org

Documentation: 9.6: ALTER TABLE - PostgreSQL

Name. ALTER TABLE -- change the definition of a table ... [ NOT VALID ] ADD table_constraint_using_index ALTER CONSTRAINT ... Indexes and table constraints involving the column will be automatically ...

https://www.postgresql.org

PostgreSQL ALTER TABLE: Modifying Table Structure By ...

Introduction to PostgreSQL ALTER TABLE statement. Add a column, drop a column, rename a column, or change a column's data type. Set a default value for the column. Add a CHECK constraint to a colu...

https://www.postgresqltutorial

PostgreSQL ALTER TABLE命令- PostgreSQL基礎教程 - 極客書

PostgreSQL的ALTER TABLE命令用來添加,刪除,或修改現有表中的列。 還可以 ... ALTER TABLE table_name ADD CONSTRAINT MyUniqueConstraint ...

http://tw.gitbook.net