我有 2 张 table :
新表
ID____PersonID___Criteria___TimeStamp
1_____456________1__________01/08/2014
2_____287________0__________01/08/2014
3_____359________0__________01/08/2014
人员表
ID______LastLogin
456_____11/08/2013
287_____10/25/2013
359_____09/15/2013
我想做的是将 NewTable.TimeStamp 更新为等于 PersonTable.LoginDate PLUS 30 天，其中 NewTable.Criteria = 0
期望的结果
新表
ID____PersonID___Criteria___TimeStamp
1_____456________1__________01/08/2014
2_____287________0__________11/24/2013
3_____359________0__________10/15/2013
我尝试过，尽管这些似乎没有任何作用:
UPDATE NewTable AS NT
INNER JOIN PersonTable AS PT ON PT.ID = NT.PersonID AND NT.Criteria = 0
SET NT.TimeStamp = DATE_ADD(PT.LastLogin, INTERVAL 30 DAY);
--我已经尝试过了
UPDATE `NewTable` AS NT, PersonTable AS PT
SET NT.TimeStamp = DATE_ADD(PT.LastLogin, INTERVAL 30 DAY)
WHERE NT.PersonID = PT.ID
AND NT.Criteria = 0;
最佳答案
UPDATE NewTable AS NT INNER JOIN PersonTable AS PT
ON PT.ID = NT.UserID
SET NT.TimeStamp = DATE_ADD(PT.LastLogin, INTERVAL 30 DAY)
WHERE NT.Criteria = 0
关于mysql - 将列日期设置为另一个表日期列加上 30 天，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21006354/