Function with table name as parameter in sql server 2008

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Hi,

I want to make a function in sql server 2008 which accepts table name as a parameter.
Eg:

SQL

create function test(@tbl varchar(50))
returns @m float
begin
select @m=id from @tbl
return
end

But this
is not accepting table name as a variable.

Posted 19-Aug-13 2:39am

Saksham_Agrawal

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S.P.Tiwari · Answer 1 · 2013-08-19T02:58:00

Solution 1

http://www.sqlusa.com/bestpractices2008/table-valued-parameter/[^]

http://www.itdeveloperzone.com/2012/12/passing-table-to-function-sql.html[^]

check the above link

Posted 19-Aug-13 2:58am

S.P.Tiwari

v2

Comments

Saksham_Agrawal 19-Aug-13 9:12am

thanks dude. But how to call that function now with table name as a parameter?

Maciej Los · Answer 2 · 2013-08-19T02:58:00

Solution 2

Instead of function, use stored procedure:

SQL

create procedure test
    @tbl varchar(50)
AS
BEGIN
    DECLARE @sql VARCHAR(2000)
    SET @sql = N'select id from ' + @tbl

    EXEC(@sql)
END

Posted 19-Aug-13 2:58am

Maciej Los

Comments

Saksham_Agrawal 19-Aug-13 9:00am

with proc it is achievable but I want the same with function only.

Maciej Los 19-Aug-13 9:16am

The reason why you can't do it in function is here: http://stackoverflow.com/questions/9607935/call-dynamic-sql-from-function[^]

Saksham_Agrawal 19-Aug-13 9:21am

DML is not allowed in Functions. But passing table name as a parameter doesnt change the structure of database.

http://www.itdeveloperzone.com/2012/12/passing-table-to-function-sql.html