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多条ID对应关系表只查一条
- WBOYOriginal
- 2016-06-07 14:53:45988browse
多条ID对应关系表只查一条 假如公司表 -----员工信息表 www.2cto.com ORGID --USERID USERID--USERINFO 关系一对多... 想要查询 每个公司只显示一个员工号 SELECT * FROM ( SELECT A.*,ROW_NUMBER() OVER (PARTITION BY orgid ORDER BY A.USERID) RN FROM us
多条ID对应关系表只查一条
假如公司表 -----员工信息表
www.2cto.com
ORGID --USERID USERID--USERINFO
关系一对多...
想要查询 每个公司只显示一个员工号
SELECT * FROM
(
SELECT A.*,ROW_NUMBER() OVER (PARTITION BY orgid ORDER BY A.USERID) RN
FROM usr A
)
WHERE RN=1
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