MySQL 基础查询

6月业绩榜

名次 伙伴业绩签单面谈每日目标1杜艳花1236720查看目标2郑东杰234510查看目标3黄传龙34511查看目标4测试000查看目标5李夏000查看目标6王恪001查看目标7陈爽000查看目标

当我拿到以上业务需求时，我就立即在想SQL语句该怎样写。

试了简单的表左右链接查询left join right join,显然问题没有这么简单，数据查询有误，后来得到大鸟指点，记录下。

select a.yyry_xiaotxiang ,a.yyry_id,a.yyry_xming,c.cc,d.dd ,b.bb
from yyry a
left join (select count(mtjl_id) bb,mtjl_yyryid
from mtjl 
where year(now())=year(mtjl_yysjian) and month(now())=month(mtjl_yysjian)
   group by mtjl_yyryid)b on a.yyry_id=b.mtjl_yyryid
left join(select xiaoshouid,sum(khsh_yji) cc  from khshdjb
            where year(now())=year(khsh_jrusjian) and month(now())=month(khsh_jrusjian)  group by
            xiaoshouid )c 
            on a.yyry_id=c.xiaoshouid 
left join(select count(khsh_id) dd,xiaoshouid 
from khshdjb 
where year(now())=year(khsh_jrusjian) and month(now())=month(khsh_jrusjian)
      group by xiaoshouid) d on a.yyry_id=d.xiaoshouid where a.yyry_jsemcheng = '转让' and a.yyry_id > 0 order by  c.cc desc 

这是三表联查，分别查询了yyry（运营人员表） 的图像,ID,姓名,khshdjb（客户售后登记表）的运营人员的当月业绩总和，签单数量，mtjl（面谈记录表）的运营人员的当月面谈次数总和。