Multiple condition in single IF statement

Question

I want to add multiple condition in single IF statement in SQL.

I am not good in SQL & referred some example, all are showing only one condition in IF.

Here is my procedure.

CREATE PROCEDURE [dbo].[AddApplicationUser]    
(  
@TenantId BIGINT,  
@UserType TINYINT,
@UserName  NVARCHAR(100),  
@Password NVARCHAR(100)  
)  

AS    

BEGIN   

IF ((@TenantId IS NULL)  AND (@UserType=0 OR @UserType=1) )
  RAISERROR('The value for @TenantID should not be null', 15, 1) -- with log 

Is this correct syntax in SQL for multiconditions in IF?

Answer 1

Yes that is valid syntax but it may well not do what you want.

Execution will continue after your RAISERROR except if you add a RETURN. So you will need to add a block with BEGIN ... END to hold the two statements.

Also I'm not sure why you plumped for severity 15. That usually indicates a syntax error.

Finally I'd simplify the conditions using IN

CREATE PROCEDURE [dbo].[AddApplicationUser] (@TenantId BIGINT,
                                            @UserType TINYINT,
                                            @UserName NVARCHAR(100),
                                            @Password NVARCHAR(100))
AS
  BEGIN
      IF ( @TenantId IS NULL
           AND @UserType IN ( 0, 1 ) )
        BEGIN
            RAISERROR('The value for @TenantID should not be null',15,1);

            RETURN;
        END
  END