UPDATE `WarningSendMail` AS alias_1 INNER JOIN (SELECT * FROM `WarningSendMail` WHERE flag=1 AND topic_id LIKE "%2267%") AS alias_2 SET ...
UPDATE `WarningSendMail` AS alias_1 INNER JOIN (SELECT * FROM `WarningSendMail` WHERE flag=1 AND topic_id LIKE "%2267%") AS alias_2 SET ...
原鏈接:https://www.cnblogs.com/zeze/p/7845913.html 作為原作者 UPDATE `WarningSendMail` AS alias_1 INNER JOIN (SELECT * FROM `WarningSendMail` WHERE flag ...
語法:UPDATE 表1 t1 SET t1.字段值1 =(SELECT t2.字段值2 FROM 表2 t2 WHERE t1.關聯字段1 = t2.關聯字段2) WHERE 條件表達式; 舉例: UPDATE t_core_device d SET d.trade_id ...
SQL update select語句 最常用的 update 語法是: UPDATE TABLE_NAME SET column_name1 = VALUE WHRER ...
1、WHERE 子句條件操作符 包括:> 、<、>=、<=、!= 、=、BETWEEN ... AND ...(在指定的兩個值之間) 示例: 1)select * from student where stu_id=267 ...
優先級 where > group by > having > order by > limit group by用法 group by一般和聚合函數一起使用,group by有一個原則,就是select后面的所有列中,沒有使用聚合函數的列,必須出現在group ...