Question

当数据插入同一个表格时，我使用触发器更新表格！但是，当我在该表中插入数据时，我得到错误

ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG: Can't update table

这是什么意思？

触发COde：

create trigger update_owners_leaving_time 
AFTER INSERT ON cc_owners_queries 
FOR EACH ROW BEGIN
update cc_owners_queries set leaving_time = query_time + INTERVAL leaving_in MINUTE , trigger_updated = 1 where trigger_updated !=1;
    END

错误：

 Error: ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG: Can't update table 'cc_owners_queries' in stored function/trigger because it is already used by statement which invoked this stored function/trigger.

Answer 1

你必须做点什么：

create trigger update_owners_leaving_time 
AFTER INSERT ON cc_owners_queries 
FOR EACH ROW BEGIN
    IF NEW.trigger_updated != 1 THEN
        set NEW.leaving_time = NEW.query_time + INTERVAL NEW.leaving_in MINUTE;
        SET NEW.trigger_updated = 1;
    END IF;
END

您不必说您需要更新当前表格。你循环遍历行..那行将成为目标。

更多信息：http://dev.mysql.com/doc/refman/5.6/en/trigger-syntax.html

Mysql触发错误ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG：可以更新表

1 个答案: