How to execute function in SQL Server 2008

Question

I build a function and I am trying to execute it...but some errors are occurring

CREATE FUNCTION dbo.Afisho_rankimin(@emri_rest int) RETURNS int AS    BEGIN        Declare @rankimi int        Select @rankimi=dbo.RESTORANTET.Rankimi        From RESTORANTET        Where  dbo.RESTORANTET.ID_Rest=@emri_rest        RETURN @rankimi   END   GO     SELECT dbo.Afisho_rankimin(5)AS Rankimi   GO 

The errors when I execute it are:

Msg 2714, Level 16, State 3, Procedure Afisho_rankimin, Line 11
There is already an object named 'Afisho_rankimin' in the database.

and also it is said that:

Can not find column "dbo", or the user defined function, or aggregate "dbo.Afisho_rankimin", or the name is ambiguous

Answer 1

It looks like there's something else called Afisho_rankimin in your DB so the function is not being created. Try calling your function something else. E.g.

CREATE FUNCTION dbo.Afisho_rankimin1(@emri_rest int) RETURNS int AS    BEGIN        Declare @rankimi int        Select @rankimi=dbo.RESTORANTET.Rankimi        From RESTORANTET        Where  dbo.RESTORANTET.ID_Rest=@emri_rest        RETURN @rankimi   END   GO 

Note that you need to call this only once, not every time you call the function. After that try calling

SELECT dbo.Afisho_rankimin1(5) AS Rankimi  

Answer 2

I have come to this question and the one below several times.

how to call scalar function in sql server 2008

Each time, I try entering the Function using the syntax shown here in SQL Server Management Studio, or SSMS, to see the results, and each time I get the errors.

For me, that is because my result set is in tabular data format. Therefore, to see the results in SSMS, I have to call it like this:

SELECT * FROM dbo.Afisho_rankimin_TABLE(5); 

I understand that the author's question involved a scalar function, so this answer is only to help others who come to StackOverflow often when they have a problem with a query (like me).

I hope this helps others.