Substitution of parameter value SQL Stored Procedure - sql

Question

What am I missing on my query below?
When I'm passing parameter for (#Status) 'All' , there were no results even though the #status parameter condition is satisfied.
Since when I pass 'All' it will be changed to (un-assigned, assigned). But when I'm passing Assigned/ Un-Assigned directly, it works fine.
ALTER PROCEDURE [dbo].[sp_File_Search]
#Uploaded AS INT = null,
#File_Name AS VARCHAR(150) = null,
#Upload_DT AS DATETIME = null,
#Status AS VARCHAR(150) = null,
#St1 AS VARCHAR(15) = null,
#St2 AS VARCHAR(15) = null
AS
If #Status = 'All'
BEGIN
SET #St1 = 'Un-Assigned'
SET #St2 = 'Assigned'
END
ELSE
BEGIN
SET #St1 = #Status
SET #St2 = #Status
END
--ON UPLOAD DATE
Begin
if #Uploaded= 1
Begin
SELECT [FILE_ID],[FILE_NAME], [UPLOAD_DT] FROM [dbo].[FILE]
WHERE (
[FILE_NAME] like '%' + #File_Name + '%'
OR #File_Name IS NULL
)
AND (
[UPLOAD_DT] between #Upload_DT + '00:00:00' and #Upload_DT + '23:59:59'
OR #Upload_DT IS NULL OR #Upload_DT = ''
)
AND (
[STATUS] IN (#St1,#St2)
Order by Upload_DT desc
END
-- ON OR BEFORE UPLOAD DATE
if #Uploaded=2
Begin
SELECT [FILE_ID],[FILE_NAME], [UPLOAD_DT]
FROM [cobind].[FILE]
WHERE (
[FILE_NAME] like '%' + #File_Name + '%'
OR #File_Name IS NULL
)
AND (
[UPLOAD_DT] between #Upload_DT + '00:00:00' and #Upload_DT + '23:59:59'
OR [UPLOAD_DT] < #Upload_DT
OR #Upload_DT IS NULL OR #Upload_DT = ''
)
AND (
[STATUS] IN (#St1,#St2)
)
Order by Upload_DT desc
END
-- ON OR AFTER UPLPOAD DATE
if #Uploaded=3
Begin
SELECT [FILE_ID], [FILE_NAME], [UPLOAD_DT]
FROM [dbo].[FILE]
WHERE (
[FILE_NAME] like '%' + #File_Name + '%'
OR #File_Name IS NULL
)
AND (
[UPLOAD_DT] between #Upload_DT + '00:00:00' and #Upload_DT + '23:59:59'
OR [UPLOAD_DT] > #Upload_DT
OR #Upload_DT IS NULL OR #Upload_DT = ''
)
AND (
[STATUS] IN (#St1,#St2)
)
Order by Upload_DT desc
END
END

Answer 1

The IN keyword works with either a subquery or a list. When you create the list of values in the SET #Status statement, you are actually creating a string. The query will try to look for the specific string, and since that string does not exist in the column being searched, there won't be any results.
You can work around this by using dynamic SQL. Basically, create a variable to hold the part related to #Status, create the query itself as an NVARCHAR string and append your variable clause to it. Finally, use sp_executesql to run the query, something like this:
If #Status = 'All'
SET #Status = '(''Un-Assigned'',''Assigned'')'
declare #query nvarchar(1000) = 'SELECT * FROM [dbo].[CoM_REPO] WHERE [STATUS] IN ' + #Status + ' Order by UploadDATE desc'
exec sp_executesql #query

Answer 2

Are you getting any error message ?
I guess its because your query says [STATUS] IN (#Status) , meaning () are already there, so if you pass Assigned , it would be coming as [STATUS] IN ('Assigned'), whereas when you are passing 'All', it may be coming as [STATUS] IN ((''Un-Assigned'',''Assigned'')) with double brackets, just try to remove the brackets.