Solved

sql if

Posted on 2012-03-15
9
288 Views
Last Modified: 2012-06-27
Hi i need one ANSWER?

HOW TO CHECK IF THERE IS SOMETHING IN VALUE USER:

      if (@USER=NULL OR  @USER='0') then
         ALTER TABLE [TABLE] NOCHECK CONSTRAINT [FK_TABLE_USER]

IF THEN DOESN'T WORK



CREATE PROCEDURE [dbo].[TABLE_INSERT]
(
	@NAME varchar(3),
	@USER varchar(3),

)
AS
BEGIN

	SET NOCOUNT ON;

	BEGIN TRY
	
	if (@USER=NULL OR  @USER='0') then
	   ALTER TABLE [TABLE] NOCHECK CONSTRAINT [FK_TABLE_USER]

		-- Insert statements for procedure here
		INSERT INTO [TABLE]
				   ([NAME]
				   ,[USER]
				    
				VALUES
				   (@NAME,
				    @USER)					)
	END TRY
					
END

Open in new window


thx
0
Comment
Question by:hrvica5
  • 4
  • 4
9 Comments
 
LVL 2

Expert Comment

by:costaf
ID: 37725990
i think you forgot to end if

probably you forgot to end if . you should do something like this:

...

 BEGIN
      var := var + 1;
      IF var = 100 THEN
            var := 0;
            COMMIT;
      END IF;

...
0
 
LVL 69

Expert Comment

by:Scott Pletcher
ID: 37726062
What do you mean "doesn't work"?

Did the INSERT fail when you expected it to succeed?

Did the ALTER TABLE statement fail?
0
 
LVL 51

Assisted Solution

by:HainKurt
HainKurt earned 300 total points
ID: 37726113
use

if (@USER=NULL OR  @USER='0')
         ALTER TABLE [TABLE] NOCHECK CONSTRAINT [FK_TABLE_USER]

or

if (@USER is NULL OR  @USER='0')
         ALTER TABLE [TABLE] NOCHECK CONSTRAINT [FK_TABLE_USER]
0
U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.

 
LVL 51

Accepted Solution

by:
HainKurt earned 300 total points
ID: 37726117
here is the syntax

if (...)
begin
....
end;

no then, no end if
0
 
LVL 69

Expert Comment

by:Scott Pletcher
ID: 37726463
You can't use "= NULL", you must use IS NULL:

if (@USER IS NULL OR  @USER='0')
0
 
LVL 51

Assisted Solution

by:HainKurt
HainKurt earned 300 total points
ID: 37726508
"You can't use "= NULL", you must use IS NULL:"

which is posted before :) actually that does not create any issue... but will not give the result author try to get...

@USER = NULL >>>> False, even if @USER is null...
0
 
LVL 69

Expert Comment

by:Scott Pletcher
ID: 37726541
Actually you said use one "or" the other.

ONLY the version with IS NULL is correct and works.
0
 
LVL 51

Expert Comment

by:HainKurt
ID: 37726558
"does not work" and "does not do the right thing" is different :)

if (@user=null)
... do something here
end;

above code is correct but the code inside never works since that condition gives false...

the original code posted by author gives syntax error :) So, I fixed syntax first, then gave the correct logical code :) combo...
0
 
LVL 69

Expert Comment

by:Scott Pletcher
ID: 37726708
>> "does not work" and "does not do the right thing" is different :) <<

Not necessarily.  Colloquially then can mean the same thing.
0

Featured Post

NFR key for Veeam Backup for Microsoft Office 365

Veeam is happy to provide a free NFR license (for 1 year, up to 10 users). This license allows for the non‑production use of Veeam Backup for Microsoft Office 365 in your home lab without any feature limitations.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Use this article to create a batch file to backup a Microsoft SQL Server database to a Windows folder.  The folder can be on the local hard drive or on a network share.  This batch file will query the SQL server to get the current date & time and wi…
Load balancing is the method of dividing the total amount of work performed by one computer between two or more computers. Its aim is to get more work done in the same amount of time, ensuring that all the users get served faster.
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.
Via a live example, show how to shrink a transaction log file down to a reasonable size.

791 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question