语法:
WHERE column IN (value1,value2,...) WHERE column NOT IN (value1,value2,...)
1、in 后面是记录集,如:
select * from table where uname in(select uname from user);
例子:
SELECT * FROM article WHERE uid IN(SELECT uid FROM user WHERE status=0)
在这个 SQL 例子里,我们实现了查出所有状态为 0 的用户(可能是被禁止)的所有文章。首先通过一个查询得到所有所有 status=0 的用户:
2、in 后面是字符串,如:
select * from table where uname in('aaa',bbb','ccc','ddd','eee',ffff'');
注意:这里一定要将字符串用单引号'' 标注起来;
3、in 后面是数组,用如下方法,请参考:
$list 是 ' 1 , 2 , 3 , 4 , 5 '
foreach (explode(',', $list) as $value) { $rules=$rules."'".$value."',"; } $arr = $this->db->selectAll('slim_auth_rule'," id IN (".$rules."'')",'id,title');