当前位置: 数据库>sqlserver
mssql 数据库表行转列,列转行终极方案
来源: 互联网 发布时间:2014-09-05
本文导语: 代码如下: --行转列问题 --建立測試環境 Create Table TEST (DATES Varchar(6), EMPNO Varchar(5), STYPE Varchar(1), AMOUNT Int) --插入數據 Insert TEST Select '200605', '02436', 'A', 5 Union All Select '200605', '02436', 'B', 3 Union All Select '200605', '02436', 'C', 3 Union All Sel...
代码如下:
--行转列问题
--建立測試環境
Create Table TEST
(DATES Varchar(6),
EMPNO Varchar(5),
STYPE Varchar(1),
AMOUNT Int)
--插入數據
Insert TEST Select '200605', '02436', 'A', 5
Union All Select '200605', '02436', 'B', 3
Union All Select '200605', '02436', 'C', 3
Union All Select '200605', '02436', 'D', 2
Union All Select '200605', '02436', 'E', 9
Union All Select '200605', '02436', 'F', 7
Union All Select '200605', '02436', 'G', 6
Union All Select '200605', '02438', 'A', 7
Union All Select '200605', '02438', 'B', 8
Union All Select '200605', '02438', 'C', 0
Union All Select '200605', '02438', 'D', 3
Union All Select '200605', '02438', 'E', 4
Union All Select '200605', '02438', 'F', 5
Union All Select '200605', '02438', 'G', 1
GO
--測試
--如果STYPE固定,可以這麼寫
Select
DATES,
EMPNO,
SUM(Case STYPE When 'A' Then AMOUNT Else 0 End) As A,
SUM(Case STYPE When 'B' Then AMOUNT Else 0 End) As B,
SUM(Case STYPE When 'C' Then AMOUNT Else 0 End) As C,
SUM(Case STYPE When 'D' Then AMOUNT Else 0 End) As D,
SUM(Case STYPE When 'E' Then AMOUNT Else 0 End) As E,
SUM(Case STYPE When 'F' Then AMOUNT Else 0 End) As F,
SUM(Case STYPE When 'G' Then AMOUNT Else 0 End) As G
From TEST
Group By DATES,EMPNO
Order By DATES,EMPNO
--如果STYPE不固定,用動態語句
Declare @S Varchar(1000)
Set @S=''
Select @S=@S+',SUM(Case STYPE When '''+STYPE+''' Then AMOUNT Else 0 End) As '+STYPE From (Select Distinct STYPE From TEST) A Order By STYPE
Set @S='Select DATES,EMPNO'+@S+' From TEST Group By DATES,EMPNO Order By DATES,EMPNO'
EXEC(@S)
GO
--如果被转置的是数字类型的话,应用下列语句
DECLARE @S VARCHAR(1000)
SET @S='SELECT DATES,EMPNO '
SELECT @S=@S+',['+STYPE+']=SUM(CASE WHEN STYPE='''+STYPE+''' THEN AMOUNT ELSE 0 END)'
FROM (Select Distinct STYPE From TEST) A Order By STYPE
SET @S=@S+' FROM TEST GROUP BY DATES,EMPNO'
EXEC(@S)
如果是列转行的话直接Union All就可以了
例如 :
city style color 46 48 50 52
长沙 S6MF01002 152 1 2 2 1
长沙 S6MF01002 201 1 2 2 1
上面到下面的样子
city style color size qty
长沙 S6MF01002 152 46 1
长沙 S6MF01002 152 48 2
长沙 S6MF01002 152 50 2
长沙 S6MF01002 152 52 1
长沙 S6MF01002 201 46 1
长沙 S6MF01002 201 48 2
长沙 S6MF01002 201 50 2
长沙 S6MF01002 201 52 1
Select City,Style,Color,[46] From Test
Union all
Select City,Style,Color,[48] From Test
Union all
Select City,Style,Color,[50] From Test
Union all
Select City,Style,Color,[52] From Test
就可以了
您可能感兴趣的文章:
本站(WWW.)旨在分享和传播互联网科技相关的资讯和技术,将尽最大努力为读者提供更好的信息聚合和浏览方式。
本站(WWW.)站内文章除注明原创外,均为转载、整理或搜集自网络。欢迎任何形式的转载,转载请注明出处。
本站(WWW.)站内文章除注明原创外,均为转载、整理或搜集自网络。欢迎任何形式的转载,转载请注明出处。