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mysql 查询父节点

时间:2016-06-18 15:22:24      阅读:229      评论:0      收藏:0      [点我收藏+]

SELECT T2.id, T2.name, T2.pid
FROM (
SELECT
@r AS _id,
(SELECT @r := pid FROM tree WHERE id = _id) AS pid,
@l := @l + 1 AS lvl
FROM
(SELECT @r := 12, @l := 0) vars,
tree h
WHERE @r <> 0) T1
JOIN tree T2
ON T1._id = T2.id

mysql 查询父节点

原文:http://www.cnblogs.com/liuzyw/p/5596178.html

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