UPDATE `WarningSendMail` AS alias_1 INNER JOIN (SELECT * FROM `WarningSendMail` WHERE flag=1 AND topic_id LIKE "%2267%") AS alias_2 SET ...
原链接:https: www.cnblogs.com zeze p .html作为原作者 UPDATE WarningSendMail ASalias INNERJOIN SELECT FROM WarningSendMail WHEREflag ANDtopic idLIKE ASalias SETalias .topic id REPLACE alias .topic id, , WHEREa ...
2019-08-01 21:30 0 961 推荐指数:
UPDATE `WarningSendMail` AS alias_1 INNER JOIN (SELECT * FROM `WarningSendMail` WHERE flag=1 AND topic_id LIKE "%2267%") AS alias_2 SET ...
必须得这样: ...
语法:UPDATE 表1 t1 SET t1.字段值1 =(SELECT t2.字段值2 FROM 表2 t2 WHERE t1.关联字段1 = t2.关联字段2) WHERE 条件表达式; 举例: UPDATE t_core_device d SET d.trade_id ...
SQL update select语句 最常用的 update 语法是: UPDATE TABLE_NAME SET column_name1 = VALUE WHRER ...
1、WHERE 子句条件操作符 包括:> 、<、>=、<=、!= 、=、BETWEEN ... AND ...(在指定的两个值之间) 示例: 1)select * from student where stu_id=267 ...
优先级 where > group by > having > order by > limit group by用法 group by一般和聚合函数一起使用,group by有一个原则,就是select后面的所有列中,没有使用聚合函数的列,必须出现在group ...