MySQL5.6不支持一个表有多个UPDATE/DELETE/INSERT触发器。
下边看一个例子:
创建三个测试表:
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mysql> create table t_trig_test_01 (name varchar(10));
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Query OK, 0 rows affected (0.07 sec)
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mysql> create table t_trig_test_02 (name varchar(10));
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Query OK, 0 rows affected (0.03 sec)
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mysql> create table t_trig_test_03 (name varchar(10));
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Query OK, 0 rows affected (0.03 sec)
创建两个触发器:
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mysql> delimiter //
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mysql> create trigger trg_test_01
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-> after insert on t_trig_test_01
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-> for each row
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-> begin
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-> insert into t_trig_test_02 select * from t_trig_test_01;
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-> end;
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-> //
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Query OK, 0 rows affected (0.06 sec)
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mysql> delimiter //
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mysql> create trigger trg_test_02
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-> after insert on t_trig_test_01
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-> for each row
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-> begin
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-> insert into t_trig_test_03 select * from t_trig_test_01;
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-> end;
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-> //
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Query OK, 0 rows affected (0.11 sec)
向表t_trig_test_01插入两条测试数据:
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mysql> insert into t_trig_test_01 values('steven');
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Query OK, 1 row affected (0.01 sec)
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mysql> insert into t_trig_test_01 values('steven');
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Query OK, 1 row affected (0.01 sec)
查看三个表的数据:
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mysql> select * from t_trig_test_01;
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+--------+
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| name |
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+--------+
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| steven |
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| steven |
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+--------+
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2 rows in set (0.00 sec)
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mysql> select * from t_trig_test_02;
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+--------+
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| name |
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+--------+
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| steven |
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| steven |
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| steven |
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+--------+
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3 rows in set (0.00 sec)
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mysql> select * from t_trig_test_03;
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+--------+
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| name |
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+--------+
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| steven |
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| steven |
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| steven |
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+--------+
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3 rows in set (0.00 sec)
达到了预期的结果。
本文名称:MySQL5.7新特性之单表支持多个DML触发器
URL标题:
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