mysql left join和union結合的用法
阿新 • • 發佈：2019-01-30
left join和union結合的用法 子查詢union 然後加個括號設定個別名 (union自動去除 重複的 )
select o.nickName,o.sex,o.province,o.city,from_unixtime(m.time,'%Y-%m-%d %H:%i:%s') as starttime,from_unixtime(z.time,'%Y-%m-%d %H:%i:%s') as endtime,ROUND((z.time-m.time)/60) as haoshifenzhong,from_unixtime(z1.time,'%Y-%m-%d') as choujiangtime from (select openid,time from xintjiashen_zhongjiang2 union select openid,time from xintjiashen_meizhong2) as z left join xintjiashen_my as m on z.openid=m.openid left join xintjiashen_zhongjiang1 as z1 on m.openid=z1.openid left join xintjiashen_oauthinfo as o on m.openid=o.wechatId where z1.prize_id !=8
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