你能帮助我PHP MySQL的排序行降数
$sql="select * from table1 where id='1,2,3,4'";
{
$sql2="select distinct column1 from table2 where column2='".$row['id']."' and left(date,10) BETWEEN '".$date_from."' AND '".$date_to."'";
}
我需要ID
你能帮助我PHP MySQL的排序行降数
$sql="select * from table1 where id='1,2,3,4'";
{
$sql2="select distinct column1 from table2 where column2='".$row['id']."' and left(date,10) BETWEEN '".$date_from."' AND '".$date_to."'";
}
我需要ID
如果我按行降序为$ SQL2的数量进行排序$ SQL理解正确的话,你想从$sql
结果在$sql
通过$sql2
每一行中的行数排序。这个连接应该做到这一点,它加入table2,并通过计数降序下达。
SELECT t1.id
FROM table1 t1
LEFT JOIN table2 t2
ON t1.id=t2.column2
WHERE id IN (1,2,3,4) -- should it really be = '1,2,3,4'?
AND LEFT(date,10) BETWEEN '2013-01-01' AND '2013-12-31'
GROUP BY t1.id
ORDER BY COUNT(DISTINCT t2.column1) DESC
为什么你会在包装'{}'第二个查询? – 2013-05-12 11:44:06