云数据库 GAUSSDB-CREATE TRIGGER:语法格式

时间:2025-06-03 09:33:14

语法格式

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CREATE [OR REPLACE] [ CONSTRAINT ] TRIGGER name { BEFORE | AFTER | INSTEAD OF } { event [ OR ... ] }
    ON table_name
    [ FROM referenced_table_name ]
    { NOT DEFERRABLE | [ DEFERRABLE ] { INITIALLY IMMEDIATE | INITIALLY DEFERRED } }
    [ FOR [ EACH ] { ROW | STATEMENT } ]
    [ WHEN ( condition ) ]
    [ EXECUTE PROCEDURE function_name ( arguments ) | AnonyBlock ];

其中event包含以下几种:

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    INSERT

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    UPDATE [ OF column_name [, ... ] ]

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    DELETE

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    TRUNCATE

support.huaweicloud.com/distributed-devg-v8-gaussdb/gaussdb-12-0573.html
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