SQL server 动态行转列

Posted 2020-07-16 AnneHan

用聚合函数配合CASE语句实现行转列功能：

现在分享一下具体实现代码：

转换前效果：

PlanName	PlanType	PlanLimit
计划1	计划类型1	RMB 1,000,000
计划1	计划类型2	RMB 1,000,000
计划1	计划类型3	RMB 1,000,000
计划2	计划类型1	RMB 1,000,000
计划2	计划类型2	RMB 1,000,000
计划2	计划类型3	RMB 1,000,000
计划3	计划类型1	RMB 1,000,000
计划3	计划类型2	RMB 1,000,000
计划3	计划类型3	RMB 1,000,000

 

 

 

 

 

 

 

 

 

1、静态实现行转列

 1 with main as
 2 (
 3     select ‘计划1‘ as PlanName,‘计划类型1‘ as PlanType,‘RMB 1,000,000‘ as PlanLimit
 4     union all
 5     select ‘计划1‘ as PlanName,‘计划类型2‘ as PlanType,‘RMB 1,000,000‘ as PlanLimit
 6     union all
 7     select ‘计划1‘ as PlanName,‘计划类型3‘ as PlanType,‘RMB 1,000,000‘ as PlanLimit
 8     union all
 9     select ‘计划2‘ as PlanName,‘计划类型1‘ as PlanType,‘RMB 1,000,000‘ as PlanLimit
10     union all
11     select ‘计划2‘ as PlanName,‘计划类型2‘ as PlanType,‘RMB 1,000,000‘ as PlanLimit
12     union all
13     select ‘计划2‘ as PlanName,‘计划类型3‘ as PlanType,‘RMB 1,000,000‘ as PlanLimit
14     union all
15     select ‘计划3‘ as PlanName,‘计划类型1‘ as PlanType,‘RMB 1,000,000‘ as PlanLimit
16     union all
17     select ‘计划3‘ as PlanName,‘计划类型2‘ as PlanType,‘RMB 1,000,000‘ as PlanLimit
18     union all
19     select ‘计划3‘ as PlanName,‘计划类型3‘ as PlanType,‘RMB 1,000,000‘ as PlanLimit
20 )
21 select PlanType as [计划]
22     ,‘计划1‘=max(case PlanName when ‘计划1‘ then PlanLimit else null end)
23     ,‘计划2‘=max(case PlanName when ‘计划2‘ then PlanLimit else null end)
24     ,‘计划3‘=max(case PlanName when ‘计划3‘ then PlanLimit else null end)
25 from main 
26 where 1=1
27 group by PlanType

2、动态实现行转列

 1 -- =============================================
 2 -- Author:        <Anne>
 3 -- Create date: <2016/04/27>
 4 -- Description:    <查询SP_AnneTest表的数据>
 5 -- =============================================
 6 CREATE PROCEDURE [dbo].[SP_AnneTest]
 7 (
 8 )
 9 AS
10     declare @sql varchar(8000)
11 BEGIN
12     set @sql=‘‘
13 
14     select @[email protected]+‘,‘+‘‘‘‘+[PlanName]+‘‘‘‘+‘=max(case PlanName when ‘‘‘+[PlanName]+‘‘‘ then PlanLimit else null end)‘
15     from main
16     where 1=1
17     group by PlanType
18     set @sql=‘select PlanType as [‘‘计划‘‘]‘[email protected]+‘ 
19             from main 
20             where 1=1
21             group by PlanType‘
22     
23     print @sql
24     exec(@sql)
25 
26 END
27 GO

 

实现效果：

计划	计划1	计划2	计划3
计划类型1	RMB 1,000,000	RMB 1,000,000	RMB 1,000,000
计划类型2	RMB 1,000,000	RMB 1,000,000	RMB 1,000,000
计划类型3	RMB 1,000,000	RMB 1,000,000	RMB 1,000,000