My 1st post here and very new to sql
I am using an access 2010 front end and SQL backend application (access because this is what I know)
trying to get a pass through query on a search form to work
don't quite understand the error I get in the stored procedure-which works until I add an order by statement-and even that works until I add a date field that needs sorting
"Conversion failed when converting date and/or time from character string."
I don't know where to start looking as to why I get this error-any directions would be appreciated
USE [CVDATA_SQL_BE]
GO
/****** Object:  StoredProcedure [dbo].[Search_Job_Schedule_SP]    Script Date: 23/04/2019 8:39:07 AM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:
-- Create date:
-- Description:
-- =============================================
ALTER PROCEDURE [dbo].[Search_Job_Schedule_SP]
-- Add the parameters for the stored procedure here
@JobNumber          VARCHAR(20) = NULL,
@Customername   VARCHAR(100)         = NULL,
@OrderNumber     VARCHAR(100)        = NULL,
@CustomerId     INT        = NULL,
@RoomTypeId  INT         = NULL,
@JobTypeId       INT         = NULL,
@FinishTypeId      INT         = NULL,
@painterid INT         = NULL,
@JobStatus     INT         = NULL,
@startdate  date = null,
@enddate   date = null,
@IsDesc           VARCHAR(5) = NULL,
@ColumnNumber     INT         = NULL
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET nocount ON;
  -- Insert statements for procedure here 
  SELECT dbo.stored_jobs.job_id, 
         dbo.stored_jobs.jobnumber, 
         dbo.customers.customername, 
         dbo.stored_jobs.customer_order_number, 
         dbo.stored_jobs.order_id, 
         dbo.job_types_local.jobtype_id, 
         dbo.stored_jobs.job_notes, 
         dbo.stored_jobs.default_jobcolour AS  DefaultColour, 
         dbo.job_finishes_local.finish_type, 
         dbo.job_types_local.job_type, 
         Iif([default_painter_id] = -1, 'N/a', [paint_supplier]) AS Painter, 
         Dbo.stored_jobs.order_created, 
         Dbo.stored_jobs.to_production,
         Dbo.stored_jobs.to_painter,
         Dbo.stored_jobs.back_painter,
         Dbo.stored_jobs.ready_to_deliver,
         Dbo.stored_jobs.required_by,
         dbo.room_types.room, 
         dbo.staff.initials, 
         dbo.stored_jobs.rated_cab_qty, 
         dbo.stored_jobs.schedule_note, 
         dbo.stored_jobs.job_status, 
         Dbo.stored_jobs.delivered_date
  FROM   ((paint_suppliers RIGHT JOIN (job_types_local INNER JOIN (job_finishes_local INNER JOIN (customers INNER JOIN (orders INNER JOIN stored_jobs 
         ON orders.id = stored_jobs.order_id) 
         ON customers.row_id = stored_jobs.customer_id) 
         ON job_finishes_local.finishtype_id = stored_jobs.job_colour_type) 
         ON job_types_local.jobtype_id = stored_jobs.job_type) 
         ON paint_suppliers.paint_supplier_id = stored_jobs.default_painter_id) 
         INNER JOIN room_types 
         ON stored_jobs.room_id = room_types.room_id) 
         INNER JOIN staff 
         ON stored_jobs.user_id = staff.staffid 
         WHERE  ( ( ( stored_jobs.order_id ) IS NOT NULL ) )
	   AND stored_jobs.jobnumber = ISNULL(@JobNumber , stored_jobs.jobnumber)
	    AND customers.customername LIKE ISNULL(@Customername , customers.customername) + '%'
	     AND stored_jobs.customer_order_number LIKE ISNULL(@OrderNumber ,stored_jobs.customer_order_number) + '%'
		AND Room_Types.Room_ID = ISNULL(@RoomTypeId , Room_Types.Room_ID)
		AND job_types_local.jobtype_id  = ISNULL(@JobTypeId  ,job_types_local.jobtype_id)
		AND job_finishes_local.FinishType_ID = ISNULL(@FinishTypeId , job_finishes_local.FinishType_ID)
		             ORDER BY CASE isnull(@IsDesc, 'ASC')
                  WHEN 'ASC' THEN CASE @ColumnNumber
                                  WHEN 1 THEN jobnumber
						   WHEN 5 THEN customername
						   WHEN 7 THEN customer_order_number
						   WHEN 11 THEN stored_jobs.default_jobcolour
						   WHEN 13 THEN finish_type
						   WHEN 15 THEN job_types_local.job_type 
						   WHEN 17 THEN Iif([default_painter_id] = -1, 'N/a', [paint_supplier])
						   WHEN 19 THEN dbo.stored_jobs.order_created   
                                  END ELSE NULL
                  END ASC,
                  CASE @IsDesc
                      WHEN 'DESC' THEN CASE @ColumnNumber
                                  WHEN 1 THEN jobnumber
						   WHEN 5 THEN customername
						   WHEN 7 THEN customer_order_number
						   WHEN 11 THEN stored_jobs.default_jobcolour
						   WHEN 13 THEN finish_type
						   WHEN 15 THEN job_types_local.job_type 
						   WHEN 17 THEN Iif([default_painter_id] = -1, 'N/a', [paint_supplier])
						   WHEN 19 THEN dbo.stored_jobs.order_created
                                  END ELSE NULL
                  END DESC;
			                  --WHEN 5 THEN customername
						  --  WHEN 19 THEN dbo.stored_jobs.order_created
						  -- WHEN 21 THEN Dbo.stored_jobs.to_production
						 --   WHEN 23 THEN Dbo.stored_jobs.to_painter
						  -- WHEN 25 THEN back_painter
						 --  WHEN 31 THEN room
						  -- WHEN 33 THEN rated_cab_qty 
			                  --    WHEN 7 THEN customer_order_number
                                -- WHEN 11 THEN stored_jobs.default_jobcolour
                                 -- WHEN 13 THEN finish_type
                                --  WHEN 15 THEN job_types_local.job_type  
END
 I would encourage you not to fear young jedi. let go of fear  you must .
 - I haven't been to referred to  as young for quite some time