对2列实施MySQL IN，以仅显示选定的记录
让我们首先创建一个表-
mysql> create table DemoTable810( First int, Second int );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable810 values(20,40); mysql> insert into DemoTable810 values(70,90); mysql> insert into DemoTable810 values(120,150); mysql> insert into DemoTable810 values(78,128);
使用select语句显示表中的所有记录-
mysql> select *from DemoTable810 ;
这将产生以下输出-
+-------+--------+ | First | Second | +-------+--------+ | 20 | 40 | | 70 | 90 | | 120 | 150 | | 78 | 128 | +-------+--------+ 4 rows in set (0.00 sec)
以下是为2列实现MySQLIN的查询-
mysql> select *from DemoTable810 where (First,Second) IN((120,150),(20,40));
这将产生以下输出-
+-------+--------+ | First | Second | +-------+--------+ | 20 | 40 | | 120 | 150 | +-------+--------+ 2 rows in set (0.00 sec)