我有两张桌子,我正在尝试使用左外连接获取信息。
我有以下查询:
SELECT *
FROM sportjefit_user
LEFT OUTER JOIN vriend ON sportjefit_user.id = vriend.vriend2
并且结果如下:
我只想要'vriend1'或'vriend2'不是48的记录
有人可以帮帮我吗?
感谢。
答案 0 :(得分:2)
SELECT * FROM sportjefit_user
LEFT OUTER JOIN vriend ON sportjefit_user.id = vriend.vriend2
WHERE vriend1 <> 48
OR vriend2 <> 48
或者,如果您想确保两个字段都不是48
SELECT * FROM sportjefit_user
LEFT OUTER JOIN vriend ON sportjefit_user.id = vriend.vriend2
WHERE vriend1 <> 48
AND vriend2 <> 48
答案 1 :(得分:1)
添加一个where clause,它几乎可以映射到您所说的内容:
SELECT *
FROM sportjefit_user LEFT OUTER JOIN vriend ON sportjefit_user.id=vriend.vriend2
where !(vriend1=48 or vriend2=48)
or (vfriend1 is null and vfriend2 is null);
答案 2 :(得分:1)
试试这个:
SELECT * FROM sportjefit_user
LEFT OUTER JOIN vriend
ON sportjefit_user.id = vriend.vriend2
WHERE ((vriend.vriend1<>48) AND (vriend.vriend2<>48))