我使用这个MySQL代码Distinct(UserID) As User,(SELECT COALESCE(SUM(Amount),0) FROM Table2 WHERE UserID=User) AS Received,
((SELECTCOALESCE(SUM(Amount),0) FROM Table1 WHERE UserID=User) - (SE
我想删除id = 142。1)user_master_activate 2)user_master表
使用union,其中两个表都有相同的列。DELETE FROM (SELECT * FROM user_master_activate UNION SELECT * FROM user_master ) AS U WHERE (U.id =SELECT * FROM (SELECT * FROM user_master_activate UNION SELECT * FROM user_master ) AS U WHERE
我想用php从mysql中删除记录。Week200801200803200805我创建了名为"tYear“的TextField,用户将插入从左边开始的前4个数字,并且sql语句应该删除所有以它们开头的记录,例如...如果用户插入2008,则应删除上述所有以2008开头的记录。我使用sql语句,如下所示,但它不起作用
$sql= "DELETE from sites WHERE Week