Question

I would like to have paging & dynamic orderby clause in a stored procedure (THAT TOO ON MORE THAN ONE COLUMN). I did try following but gives me an error

It seems I cannot use Row_number() over rank()

Windowed functions cannot be used in the context of another windowed function or aggregate.

Is there any alternative to achieve this one, apart from linq to sql

SELECT  [t8].[AssetId], 
            [t8].[WorkOrderId], 
            [t8].[IssueDescription] AS [WorkOrderDescription], 
            [t8].[value] AS [Type], 
            [t8].[WorkOrderStatusTypeName] AS [Status],
            [t8].[value2] AS [StartDate], 
            [t8].[CompletedDate] AS [CompleteDate], 
            [t8].[value22] AS [CompletedBy], 
            ISNULL([t8].[value3],0) AS [Hours]
    FROM    (
                SELECT  ROW_NUMBER() 
                    OVER (ORDER BY  CASE WHEN @sortColumnName = 'default' THEN (RANK() over( order by [t7].[WorkOrderStatusTypeId] ASC, [t7].[WorkOrderId])) END ,
                                    CASE WHEN @sortColumnName = 'WorkOrderId' AND @sortOrder = 'asc' THEN [t7].[WorkOrderId] END ASC,
                                    CASE WHEN @sortColumnName = 'WorkOrderId' AND @sortOrder = 'desc' THEN [t7].[WorkOrderId] END DESC
                    ) AS [ROW_NUMBER],  
                    [t7].[AssetId], 
                    [t7].[WorkOrderId], 
                    [t7].[IssueDescription], 
                    [t7].[value], 
                    [t7].[WorkOrderStatusTypeName], 
                    [t7].[value2], 
                    [t7].[CompletedDate],
                    [t7].[value22], 
                    [t7].[value3]
            from    --Different tables      
            ) as t8     
    WHERE       [t8].[ROW_NUMBER] BETWEEN ((@pageIndex-1) * @pageSize)+ 1 AND @pageIndex * @pageSize
    ORDER BY    [t8].[ROW_NUMBER]

Answer 1

Used

SELECT  CASE    
        WHEN @sortColumnName ='default' AND @sortOrder = 'asc'  then row_number() over (order by [t7].[WorkOrderStatusTypeId], [t7].[CompletedDate] ASC) 
        WHEN @sortColumnName ='WorkOrderId' AND @sortOrder = 'asc'  then row_number() over (order by [t7].[WorkOrderId] ASC) 
        WHEN @sortColumnName ='WorkOrderId' AND @sortOrder = 'desc' then row_number() over (order by [t7].[WorkOrderId] DESC)
        END AS [ROW_NUMBER], 

Instead of

SELECT  ROW_NUMBER() 
        OVER (ORDER BY  CASE WHEN @sortColumnName = 'default' THEN (RANK() over( order by [t7].[WorkOrderStatusTypeId] ASC, [t7].[WorkOrderId])) END ,
                        CASE WHEN @sortColumnName = 'WorkOrderId' AND @sortOrder = 'asc' THEN [t7].[WorkOrderId] END ASC,
                        CASE WHEN @sortColumnName = 'WorkOrderId' AND @sortOrder = 'desc' THEN [t7].[WorkOrderId] END DESC
        ) AS [ROW_NUMBER],

Cannot have nested windowed functions like RowNumber() and Rank() together, instead they can be used inside case statement.