使用SQL的案例分析

小编给大家分享一下使用SQL的案例分析，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！

需求

所有部门汇总的结果的打分。大部分指标是根据部门汇总(SUM或AVG)结果打分。
但面谈率和前10%加班平均小时数俩指标，不是根据所有部门(TEAM)汇总(SUM或AVG)结果打分。而是需要根据每个部门的
数据做排序或累加后的结果打分
面谈率计算方式：TEAM1中季度1月份，面谈人数比例目标是33% -》 目标面谈人数 = 部门人数*33%
               实际面谈人数 = 10
    TEAM1中季度2月份，面谈人数比例目标是60% -》 目标面谈人数 = 部门人数*60%
               实际面谈人数 = 2 + 10（1月份实际面谈人数）
    TEAM1中季度3月份，面谈人数比例目标是100% -》目标面谈人数 = 部门人数*100%
               实际面谈人数 = 1 + 12（2月份实际面谈人数）
这里部门人数是按季度统计每个季度部门的总人数(且不算领导，在之前存储过程中部门人数已确定，CVS_DEPT_PAX_CNT表示），因为每季度部门人数或部门关系都可能变更
计算每月实际面谈率 = 实际面谈人数 / CAST(目标面谈人数 AS NUMERIC(19,2)) * 100  
注意 这里是把整数转换成小数保证不用整除计算。要求是小数
具体SQL如下
    /*每个group的统计*/
           
    DECLARE @CVS_SING_STAT AS TABLE
    ( 
       TEAM_CD VARCHAR(20)         
      ,GRP_CD VARCHAR(20)         
      ,CHECK_RADIO numeric(19,2) 
     
    )
     INSERT INTO @CVS_SING_STAT
     SELECT T.TEAM_CD,T.DEPT_CD GRP_CD,T.CHECK_RADIO
     FROM /*如下内层查询是在SQL SERVER 2008上做每行的累积运算*/
       SELECT   SUBSTRING(BASE.DHSTC_CD,0,5) DH_YEAR ,BASE.STC_MONTH ,SUBSTRING(BASE.DHSTC_CD,5,8) DH_MONTH
         ,BASE.TEAM_CD,BASE.DEPT_CD,BASE.H09_CNT,BASE.CVS_DEPT_PAX_CNT
         ,SUM(ROLL.H09_CNT) ACC
         ,SUM(ROLL.H09_CNT)/BASE.CVS_DEPT_PAX_CNT CVS_RAT
         --,33.0/100.0
         --,CAST(33.0/100.0 AS NUMERIC(19,2))
         --,SUM(ROLL.H09_CNT)/(BASE.CVS_DEPT_PAX_CNT*(33.0/100.0)) 就是实际面谈人数/目标面谈人数
         --,CAST(SUM(ROLL.H09_CNT)/(BASE.CVS_DEPT_PAX_CNT*(33.0/100.0)) AS NUMERIC(19,2)) FLOATTEST
         ,CASE WHEN BASE.STC_MONTH = '01' THEN CAST(SUM(ROLL.H09_CNT)/(BASE.CVS_DEPT_PAX_CNT*(33.0/100.0)) AS NUMERIC(19,2))
         WHEN BASE.STC_MONTH = '02' THEN CAST(SUM(ROLL.H09_CNT)/(BASE.CVS_DEPT_PAX_CNT*(66.0/100.0)) AS NUMERIC(19,2))
         WHEN BASE.STC_MONTH = '03' THEN CAST(SUM(ROLL.H09_CNT)/(BASE.CVS_DEPT_PAX_CNT*(100.0/100.0)) AS NUMERIC(19,2))
        END CHECK_RADIO
      FROM T_DM_DHSTC_DEPT BASE
       ,T_DM_DHSTC_DEPT ROLL
      WHERE SUBSTRING(BASE.DHSTC_CD,0,5) = SUBSTRING(ROLL.DHSTC_CD,0,5)--YEAR
      AND   BASE.STC_QUATR = ROLL.STC_QUATR
      AND   BASE.STC_MONTH >= ROLL.STC_MONTH
      AND   BASE.TEAM_CD = ROLL.TEAM_CD
      AND   BASE.DEPT_CD = ROLL.DEPT_CD     
       -- AND   BASE.DEPT_CD = 'EA190086'
      GROUP BY SUBSTRING(BASE.DHSTC_CD,0,5),BASE.TEAM_CD,BASE.DEPT_CD,SUBSTRING(BASE.DHSTC_CD,5,8),BASE.STC_MONTH,BASE.H09_CNT,BASE.CVS_DEPT_PAX_CNT
       
     )T
     WHERE T.DH_YEAR = @YEAR AND T.DH_MONTH = @MONTH
            
            
            
                /*每个TEAM的统计*/
           
    DECLARE @CVS_TEAM_STAT AS TABLE
    ( 
       TEAM_CD VARCHAR(20)         
      ,GRP_CD VARCHAR(20)         
      ,CHECK_RADIO numeric(19,2) 
    )
     DECLARE @CVS_TEAM_BASE AS TABLE
         ( 
          DH_YEAR  VARCHAR(20)
            ,STC_QUATR VARCHAR(20)
            ,STC_MONTH VARCHAR(20)
            ,DH_MONTH  VARCHAR(20)
            ,TEAM_CD VARCHAR(20)         
            ,DEPT_CD VARCHAR(20)
            ,CVS_GRP_PAX_CNT  numeric(19,2)
            ,H09_CNT      numeric(19,2)    
          
         )
                   
                INSERT INTO @CVS_TEAM_BASE
                SELECT T1.DH_YEAR,T2.STC_QUATR,T1.DH_MONTH,T2.STC_MONTH,T2.TEAM_CD,'-' GRP_CD
                      ,SUM(CVS_DEPT_PAX_CNT) CVS_GRP_PAX_CNT
                      ,SUM(T2.H09_CNT) ACC_H09_CNT
                                    
                FROM  T_DM_DHSTC      T1
                     ,T_DM_DHSTC_DEPT T2
                WHERE
                --and   TEAM_CD = 'EA190001'
                      T1.DHSTC_CD = T2.DHSTC_CD
                GROUP BY  T1.DH_YEAR,T2.STC_QUATR,T1.DH_MONTH,T2.STC_MONTH
                         ,T2.TEAM_CD
                        
                INSERT INTO @CVS_TEAM_STAT
                SELECT T.TEAM_CD,'-' GRP_CD,T.CHECK_RADIO
                FROM(
                     SELECT BASE.DH_YEAR,MAX(BASE.STC_QUATR) STC_QUATR,BASE.DH_MONTH,BASE.STC_MONTH,BASE.TEAM_CD,BASE.H09_CNT
                          ,SUM(ROLL.H09_CNT) ACC
                          ,BASE.CVS_GRP_PAX_CNT
                          ,SUM(ROLL.H09_CNT)/BASE.CVS_GRP_PAX_CNT CVS_RAT
                         ,CASE  WHEN BASE.STC_MONTH = '01' THEN CAST(SUM(ROLL.H09_CNT)/(BASE.CVS_GRP_PAX_CNT*(33.0/100.0)) AS NUMERIC(19,2))
                                WHEN BASE.STC_MONTH = '02' THEN CAST(SUM(ROLL.H09_CNT)/(BASE.CVS_GRP_PAX_CNT*(66.0/100.0)) AS NUMERIC(19,2))
                                WHEN BASE.STC_MONTH = '03' THEN CAST(SUM(ROLL.H09_CNT)/(BASE.CVS_GRP_PAX_CNT*(100.0/100.0)) AS NUMERIC(19,2))
                            END CHECK_RADIO
                           
         FROM @CVS_TEAM_BASE BASE
             ,@CVS_TEAM_BASE ROLL
         WHERE BASE.DH_YEAR = ROLL.DH_YEAR
         --AND   BASE.DH_MONTH = ROLL.DH_MONTH
         AND   BASE.STC_QUATR = ROLL.STC_QUATR
      
         AND   BASE.DH_MONTH >= ROLL.DH_MONTH
      
         AND   BASE.TEAM_CD = ROLL.TEAM_CD    
      
         GROUP BY BASE.DH_YEAR,BASE.DH_MONTH,BASE.STC_MONTH,BASE.TEAM_CD,BASE.H09_CNT,BASE.CVS_GRP_PAX_CNT
        
     )T
     WHERE T.DH_YEAR = @YEAR AND T.DH_MONTH = @MONTH

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