行转列应用案例

DECLARE @Sql NVARCHAR(MAX)
DECLARE @ExecSql NVARCHAR(MAX)
--获得需要扩展的列明
SELECT  @Sql = ISNULL(@Sql + '],[', '') + Name
FROM    dbo.CodeProjectKind
WHERE   YearNo = 2010
GROUP BY Name,Code
ORDER BY Code


SET @Sql = '[' + @Sql + ']'

SET @ExecSql='
SELECT 
  CompanyId, 
  '+@Sql+'
  FROM (SELECT  
          A.CompanyId,
                    ProjectKind = C.Name ,
                    PlanTotalAmount =ISNULL(A.PlanTotalAmount,0)
        FROM    dbo.ProjectPlan A
        LEFT JOIN dbo.Company B 
          ON A.CompanyId = B.Id
        LEFT JOIN dbo.CodeProjectKind C 
          ON A.ProjectKindId = C.Id
        WHERE A.YearNo = 2010
        AND A.PhaseId=''BE55C1869CE94909B0A4A896C5CE2496''
        AND A.Version = ''20100831163638140'') A 
        PIVOT (SUM(PlanTotalAmount)
        --FOR 需要扩展的字段  IN(列名)
        FOR ProjectKind IN (' + @Sql + ')) B 
        ORDER BY CompanyId
'

EXEC (@ExecSql)