asked on

How to allow NULL values in SQL query

Hi,

I am using ISNULL function to allow NULL values in Insert statement but still I am getting below error. Please suggest how to fix below error or please tell me how to allow null values in SQL query.

Error:
Cannot insert the value NULL into column 'O_ID', table 'dbo.P_Tbl'; column does not allow nulls. INSERT fails.

Query

IF object_id('tempdb..#temp') IS NOT NULL
BEGIN
	DROP TABLE #temp
END
create table #temp(ID INT IDENTITY(1, 1) ,ActID bigint)

DECLARE @v_ActID bigint;
DECLARE @v_Flag int;
DECLARE @v_UsrID bigint;
DECLARE @v_userid bigint;

SET @v_Flag=1;
SET @v_UsrID = 0;
SET @v_userid = 0;

SELECT @v_ActID=ActID  from #temp WITH(NOLOCK) where id=@v_Flag

SET @v_UsrID = 0;

SELECT @v_UsrID=O_ID FROM P_Tbl WITH(NOLOCK) WHERE O_ID=@v_ActID AND UsrID=@v_userid
SET @v_UsrID=isnull(@v_UsrID,0);

IF (@v_UsrID=0)

BEGIN		
																
INSERT INTO P_Tbl (O_ID,UsrID,C_By,M_By,C_Date,ISR)
VALUES (@v_ActID,@v_userid,-1,-1,getdate(),1)

END

Open in new window

SOLUTION

David Kroll

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

Randy Poole

I see you are trying to get a value from #temp without inserting anything into #temp so that column will return a null..

SOLUTION

awking00

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

sqldba2013

ASKER

Thanks for your suggestion.

I have modified query with above changes and still I am getting same error.

IF object_id('tempdb..#temp') IS NOT NULL
BEGIN
	DROP TABLE #temp
END
create table #temp(ID INT IDENTITY(1, 1) ,ActID bigint)

DECLARE @v_ActID bigint;
DECLARE @v_Flag int;
DECLARE @v_UsrID bigint;
DECLARE @v_userid bigint;

SET @v_Flag=1;
SET @v_UsrID = 0;
SET @v_userid = 0;
SET @v_ActID=isnull(@v_ActID,0);

SELECT @v_ActID=ActID  from #temp WITH(NOLOCK) where id=@v_Flag

SET @v_UsrID = 0;

SELECT @v_UsrID=O_ID FROM P_Tbl WITH(NOLOCK) WHERE O_ID=@v_ActID AND UsrID=@v_userid
SET @v_UsrID=isnull(@v_UsrID,0);

IF (@v_UsrID=0)

BEGIN		
																
INSERT INTO P_Tbl (O_ID,UsrID,C_By,M_By,C_Date,ISR)
VALUES (COALESCE(@v_ActID,0),@v_userid,-1,-1,getdate(),1)

END

Open in new window

ASKER CERTIFIED SOLUTION

Randy Poole

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

sqldba2013

ASKER

Thanks to all for your inputs and my issue has been resolved.