Mysql 列转行行转列

mysql把查询数据的行转为列。

example:

#创建表

 
  DROP  
  TABLE  
  IF EXISTS `TabName`; 
 

 
  CREATE  
  TABLE  
  `TabName` ( 
 

 
     
  `Id`  
  int 
  (11)  
  NOT  
  NULL  
  AUTO_INCREMENT, 
 

 
     
  ` 
  Name 
  `  
  varchar 
  (20)  
  DEFAULT  
  NULL 
  , 
 

 
     
  ` 
  Date 
  `  
  date  
  DEFAULT  
  NULL 
  , 
 

 
     
  `Scount`  
  int 
  (11)  
  DEFAULT  
  NULL 
  , 
 

 
  PRIMARY  
  KEY  
  (`Id`)

 
  ) ENGINE=InnoDB AUTO_INCREMENT=9  
  DEFAULT  
  CHARSET=utf8; 
 

#插入数据

 
  INSERT  
  INTO  
  `TabName`  
  VALUES  
  ( 
  '1' 
  ,  
  '小说' 
  ,  
  '2013-09-01' 
  ,  
  '10000' 
  ); 
 

 
  INSERT  
  INTO  
  `TabName`  
  VALUES  
  ( 
  '2' 
  ,  
  '微信' 
  ,  
  '2013-09-01' 
  ,  
  '20000' 
  ); 
 

 
  INSERT  
  INTO  
  `TabName`  
  VALUES  
  ( 
  '3' 
  ,  
  '小说' 
  ,  
  '2013-09-02' 
  ,  
  '30000' 
  ); 
 

 
  INSERT  
  INTO  
  `TabName`  
  VALUES  
  ( 
  '4' 
  ,  
  '微信' 
  ,  
  '2013-09-02' 
  ,  
  '35000' 
  ); 
 

 
  INSERT  
  INTO  
  `TabName`  
  VALUES  
  ( 
  '5' 
  ,  
  '小说' 
  ,  
  '2013-09-03' 
  ,  
  '31000' 
  ); 
 

 
  INSERT  
  INTO  
  `TabName`  
  VALUES  
  ( 
  '6' 
  ,  
  '微信' 
  ,  
  '2013-09-03' 
  ,  
  '36000' 
  ); 
 

 
  INSERT  
  INTO  
  `TabName`  
  VALUES  
  ( 
  '7' 
  ,  
  '小说' 
  ,  
  '2013-09-04' 
  ,  
  '35000' 
  ); 
 

 
  INSERT  
  INTO  
  `TabName`  
  VALUES  
  ( 
  '8' 
  ,  
  '微信' 
  ,  
  '2013-09-04' 
  ,  
  '38000' 
  ); 
 

 
         查看数据 
        
         -- ------------------------ 
        
         SELECT   
         *  
         from  
         TabName ;

以date为主键合并数据

 
    
     
       
         -- ------------------------ 
        
 
         -- 列转行统计数据 
        
 
         -- ------------------------ 
        
 
         SELECT  
         Date  
         , 
        
 
         MAX 
         ( 
         CASE  
         NAME  
         WHEN  
         '小说'  
         THEN  
         Scount  
         ELSE  
         0  
         END  
         ) 小说, 
        
 
         MAX 
         ( 
         CASE  
         NAME  
         WHEN  
         '微信'  
         THEN  
         Scount  
         ELSE  
         0  
         END  
         ) 微信  
        
 
         FROM  
         TabName   
        
 
         GROUP  
         BY  
         Date   
         <br><br> 
        
 
     
 
    
  

 
         - 行转列统计数据 
        
         -- ------------------------

 
  select 
 

 
       
  Date 
  , group_concat( 
  NAME 
  , 
  '总量:' 
  ,Scount)  
  as  
  b_str  
  from    
  TabName  
 

 
  group  
  by  
  Date

 
         select  
         Date 
         , 
         NAME 
         , group_concat( 
         NAME 
         , 
         '总量:' 
         ,Scount)  
         as  
         b_str  
         from    
         TabName  
        
         group  
         by  
         Date  
         , 
         NAME

统计用户12个月出勤天数行转列使用子查询实现，对重复数据进行sum求和

#查询结果

#需要的结果

注意mysql列名避免使用数字

select tgr.user_id,IFNULL(f.one,0) '1',IFNULL(f.two,0) '2',IFNULL(f.three,0) '3',IFNULL(f.four,0) '4',IFNULL(f.five,0) '5',IFNULL(f.six,0) '6',IFNULL(f.seven,0) '7',IFNULL(f.eight,0) '8',IFNULL(f.nine,0) '9',
IFNULL(f.ten,0) '10',IFNULL(f.eleven,0) '11',IFNULL(f.twelve,0) '12'
from tb_group_relationship tgr
left join
(
SELECT w.user_id,
sum((SELECT if(1=w.months,w.count,0) ) ) as one, sum((SELECT if(2=w.months,w.count,0) ) ) as two,
sum((SELECT if(3=w.months,w.count,0) )) as three, sum((SELECT if(4=w.months,w.count,0) ))  as four,
sum((SELECT if(5=w.months,w.count,0) )) as five, sum((SELECT if(6=w.months,w.count,0) ))  as six,
sum((SELECT if(7=w.months,w.count,0) )) as seven, sum((SELECT if(8=w.months,w.count,0) ))  as eight,
sum((SELECT if(9=w.months,w.count,0) )) as nine, sum((SELECT if(10=w.months,w.count,0) ))  as ten,
sum((SELECT if(11=w.months,w.count,0) )) as eleven, sum((SELECT if(12=w.months,w.count,0) ))  as twelve
from
(
SELECT
user_id, (COUNT(CASE WHEN way=0 AND sign_out_time IS NOT NULL THEN 1 ELSE NULL END) +
COUNT(CASE  WHEN way=1 AND sign_in_time IS NOT NULL THEN 1 ELSE NULL END)) count ,month(sign_date) months
FROM tb_sign_record  where status=1
and year(sign_date)= #{whereMap.year}
and org_id=#{whereMap.engTeamId}
group by user_id, months
) w
group by user_id
) f on  tgr.user_id=f.user_id
where status=1
and eng_team_id=#{whereMap.engTeamId}
<if test="whereMap.orderColumns != null">
    order by
    <foreach collection="whereMap.orderColumns" item="orderColumn" index="index"
             open="" close="" separator=",">
        ${orderColumn} ${orderSort}
    </foreach>
</if>
<if test="startRecord != null and pageSize != null">
    limit #{startRecord,jdbcType=INTEGER},#{pageSize,jdbcType=INTEGER}
</if>

Mysql 列转行行转列

mysql把查询数据的行转为列。

example:

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