Anne Han

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SQL server 动态行转列

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 @sql=@sql+','+''''+[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'']'+@sql+' 
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

 

posted @ 2016-05-30 12:05  AnneHan  阅读(504)  评论(0)  编辑  收藏  举报