使用以逗号分隔的SQL的ID [英] Using id that are comma separated sql
本文介绍了使用以逗号分隔的SQL的ID的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如果您运行此查询
select
GROUP_CONCAT(p1.id) _fid,
GROUP_CONCAT(p2.id) _mid,
count(1)
from
new_person as pb
inner join
new_person as p1 ON pb.father_id = p1.id
inner join
new_person as p2 ON pb.mother_id = p2.id
where
(p1.last_name <> 'N.N.'
and p1.last_name <> '')
or (p2.last_name <> 'N.N.'
and p2.last_name <> '')
group by p1.first_name , p1.last_name , p2.first_name , p2.last_name
having count(1) > 1;
您会收到这样的ID列表
you get a list of id back like this
'4676,6088,4804,4968,6554,5212,5504,5810,7298,7782,6970'
有没有一种方法可以让您立即在其他查询中使用它,还是必须先在php中加载它?
Is there a way so you can immediately use it in a other query or do you have to load it in php first?
推荐答案
您可以在其他查询中使用它,例如:
You can use it in another query like so:
SELECT M.*, P.* FROM
(
SELECT GROUP_CONCAT(p1.id) _fid, GROUP_CONCAT(p2.id) _mid, count(1)
FROM new_person AS pb
INNER JOIN new_person AS p1 ON pb.father_id = p1.id
INNER JOIN new_person AS p2 ON pb.mother_id = p2.id
WHERE (
p1.last_name <> 'N.N.'
AND p1.last_name <> '')
OR (p2.last_name <> 'N.N.'
AND p2.last_name <> '')
GROUP BY p1.first_name, p1.last_name, p2.first_name, p2.last_name
HAVING COUNT(1) > 1
) AS M INNER JOIN new_person as p ON M._fid = p.id
注意,我将整个查询添加到别名为M
的from语句中.然后,您可以JOIN
M
到另一个表,或从那里做任何您想做的事情.
Notice I added the entire query to the from statement with the alias as M
. You can then JOIN
M
to another table or do whatever you want from there.
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