Question

I want to call this procedure that sends one value that can be NULL or any int value.

SELECT DomainName, DomainCode FROM Tags.tblDomain WHERE SubDomainId =@SubDomainId

I simply want to use this single query rather than what i m doing right now in below given code.

I searched for this how could i do this then i got this Link.

According to this I have to set ANSI_NULLS OFF

I am not able to set this inside this procedure before executing my sql query and then reset it again after doing this.

ALTER PROCEDURE [Tags].[spOnlineTest_SubDomainSelect] 
    @SubDomainId INT
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;
    -- Insert statements for procedure here
    IF @SubDomainId IS NULL
        SELECT DomainName, DomainCode FROM Tags.tblDomain WHERE SubDomainId IS NULL 
    ELSE
        SELECT DomainName, DomainCode FROM Tags.tblDomain WHERE SubDomainId =@SubDomainId
END

What will be the better practice to do deal with ANSI_NULLS or Using If Else

Answer 1

SET ANSI_NULLS is ony defined at stored proc create time and cannot be set at run time.

From CREATE PROC

Using SET Options

The Database Engine saves the settings
of both SET QUOTED_IDENTIFIER and SET
ANSI_NULLS when a Transact-SQL stored
procedure is created or modified.
These original settings are used when
the stored procedure is executed.
Therefore, any client session settings
for SET QUOTED_IDENTIFIER and SET
ANSI_NULLS are ignored when the stored
procedure is running. Other SET
options, such as SET ARITHABORT, SET
ANSI_WARNINGS, or SET ANSI_PADDINGS
are not saved when a stored procedure
is created or modified. If the logic
of the stored procedure depends on a
particular setting, include a SET
statement at the start of the
procedure to guarantee the appropriate
setting. When a SET statement is
executed from a stored procedure, the
setting remains in effect only until
the stored procedure has finished
running. The setting is then restored
to the value the stored procedure had
when it was called. This enables
individual clients to set the options
they want without affecting the logic
of the stored procedure.

The same applies to SET QUOTED_IDENTIFIER

In this case, use IF ELSE because SET ANSI_NULLS will be ON in the future.

Or Peter Lang’s suggestion.

To be honest, expecting SubDomainId = @SubDomainId to work when @SubDomainId is NULL is not really correct usage of NULL…