在SQL PIVOT

Question

我在下面使用动态SQL创建新列并将其展开，但是[MonthList]字段是连接的，并且需要以某种方式将其拆分为当前仅在[Monthly Rate]值[MonthList] = @PivotColumns 1}}名称

表格示例：

当前代码：

Set @SQLQuery = 
    N'SELECT *
    FROM [dbo].[TableA] 
    PIVOT( sum([Monthly Rate])
FOR [MonthsList] IN (' + @PivotColumns + ')) as P'

EXEC sp_executesql @SQLQuery

感谢您的帮助！

Answer 1

管理使用Cursor提出答案。如果有人感兴趣，那么：

DECLARE @Q NVARCHAR(4000),
@CName VARCHAR(255)

DECLARE ColCur CURSOR
FOR
SELECT C.name as Column_name
FROM sys.columns C
LEFT JOIN sys.tables t
on C.object_id = t.object_id
WHERE t.name = 'TableA'

OPEN ColCur

FETCH NEXT FROM ColCur INTO @CName


WHILE(@@FETCH_STATUS =0)
BEGIN

SET @Q = 
case when @CName like '___''__' then
'UPDATE TableA
SET ['+@CName+'] = [Monthly Rate]
WHERE [MonthsList] like ''%'+replace(@CName,char(39),char(39)+char(39))+'%'''
Else ''
end
--print @q
EXEC sp_executesql @Q

FETCH NEXT FROM ColCur INTO @CName

END

CLOSE ColCur
DEALLOCATE ColCur