Question

有没有办法删除此特定列？这不起作用。虽然，SELECT在mysql中运行良好，但已经过测试。

DELETE FROM table2
WHERE table2.ID IN (SELECT * FROM table2, table1
WHERE table2.tableID = 2 and table1.level = 1 and table1.ID = 1)

要添加，table1和table2具有列：

table1(table1.id, table1.name, table1.level) 

table2(table2.id, table1.id)

我有两张桌子：

用户

userid username userleve
1       dani     1
2       mark     2

游戏

 gameid   userid  cluba        clubb     resa   resb
  1        1      liverpool    chealsea    1     1
  2        2      Aston Villa  Watford     0     0
  3        1      Sunderland   Swansea City 2     1

表之间没有FK，我需要删除输入的1行特定级别的特定用户。

Answer 1

试试这个：

DELETE FROM games
USING games
JOIN users ON games.userid = users.userid  
WHERE games.userID = 2
and users.userlevel = 1;

select * from users;

select * from games;

SQL Fiddle Demo

使用select多条件删除mysql

1 个答案: