Passing parametrs to dynamic query - sql

Question

I have a stored procedure as following, I need to pass paramters to the dynamic pivot. My query runs, I just need to do some filtering based on the passed parameters
-- AND (#SelectedSystemIDs IS NULL OR System.ID IN(select * from dbo.SplitInts_RBAR_1(#SelectedSystemIDs, ',')))
--AND ((#PlatformID IS NULL) OR (System.PlatformID = #PlatformID) OR (#PlatformID = 12 AND System.PlatformID <= 2))
-- AND (ServiceEntry.ServiceDateTime between #StartDate and #EndDate)
so I want to add the above criteria, how could achieve that?
ALTER PROCEDURE [dbo].[spExportStuff]
(#StartDate datetime,
#EndDate datetime,
#SelectedSystemIDs nvarchar (2000) = NULL,
#SelectedTsbIDs nvarchar (2000) = NULL,
#UserRoleID int
)
AS
DECLARE #InstrumentType int = NULL
DECLARE #PlatformID int = null
IF (#SelectedSystemIDs = '')
begin
SET #SelectedSystemIDs = NULL
END
IF (#SelectedTsbIDs = '')
begin
SET #SelectedTsbIDs = NULL
END
IF(#UserRoleID = 1)
BEGIN
SET #PlatformID = 1
END
IF(#UserRoleID = 2)
BEGIN
SET #PlatformID = 2
END
IF (#UserRoleID = 3)
BEGIN
SET #PlatformID = 12
END
IF(#UserRoleID = 4)
BEGIN
SET #PlatformID = 3
END
IF(#UserRoleID = 5)
BEGIN
SET #PlatformID = 4
END
IF(#UserRoleID = 6)
BEGIN
SET #PlatformID = NULL
END
DECLARE #PivotColumnHeaders NVARCHAR(MAX)
SELECT #PivotColumnHeaders =
COALESCE(
#PivotColumnHeaders + ',[' + cast(SystemFullName as Nvarchar) + ']',
'[' + cast(SystemFullName as varchar)+ ']'
)
FROM System
DECLARE #PivotTableSQL NVARCHAR(MAX)
SET #PivotTableSQL = N'
SELECT *
FROM (
SELECT
TSBNumber [TSBNumber],
SystemFullName,
ClosedDate
FROM ServiceEntry
INNER JOIN System
ON ServiceEntry.SystemID = System.ID
Group By TSBNumber, SystemFullName, ClosedDate
) AS PivotData
PIVOT (
max(ClosedDate)
FOR SystemFullName IN (
' + #PivotColumnHeaders + '
)
) AS PivotTable
'
EXECUTE(#PivotTableSQL)

Answer 1

you can construct the required criteria as another input to the stored procedure and append it to the dynamic query
ALTER PROCEDURE [dbo].[spExportStuff]
(#StartDate datetime,
#EndDate datetime,
#SelectedSystemIDs nvarchar (2000) = NULL,
#SelectedTsbIDs nvarchar (2000) = NULL,
#UserRoleID int,
#WhereClause varchar(max) -> this is the new parameter.
)
DECLARE #PivotTableSQL NVARCHAR(MAX)
SET #PivotTableSQL = N'
SELECT *
FROM (
SELECT
TSBNumber [TSBNumber],
SystemFullName,
ClosedDate
FROM ServiceEntry
INNER JOIN System
ON ServiceEntry.SystemID = System.ID
Group By TSBNumber, SystemFullName, ClosedDate
) AS PivotData
PIVOT (
max(ClosedDate)
FOR SystemFullName IN (
' + #PivotColumnHeaders + '
)
) AS PivotTable
' + #WhereClause -> you can append the where clause here.
EXECUTE(#PivotTableSQL)