sproc not setting value for declared variable?

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i declared a variable and want to set it's value by way of a select query.

i have a table:

fileNameGenerator
______________________
(pk)fileSymbol | bc

here's my sp:

SQL

alter procedure bcSymbol
(
@bc decimal(18,15)
)
AS
/* SET NOCOUNT ON */
Declare @bcSymbol varchar(50)
Select @bcSymbol = (SELECT fileSymbol From fileNameGenerator WHERE bc = @bc)
RETURN

for some reason, this is the output i get...

Running [dbo].[bcSymbol] ( @bc = 8.550000000000000 ).

No rows affected.
(0 row(s) returned)
@RETURN_VALUE = 0
Finished running [dbo].[tempFileName].

i don't understand why i'm not getting the proper symbol back. i copied the bc value in from the table itself. the output should have been a 1 according to the table.s

Posted 25-Nov-13 6:43am

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pradiprenushe 25-Nov-13 13:29pm

What is result of this query
SELECT fileSymbol From fileNameGenerator WHERE bc = 8.550000000000000

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Maciej Los · Answer 1 · 2013-11-25T07:36:00

You used RETURN statement without any value. If no value is specified on RETURN, a stored procedure returns the value 0.
Source: Using RETURN[^]

I would suggest you to read this article: Return Data from a Stored Procedure[^]. There are 2 ways to return data from SP.

Another way is to return recordset:

SQL

ALTER PROCEDURE bcSymbol
       @bc decimal(18,15)
AS
BEGIN
SELECT fileSymbol
FROM fileNameGenerator
WHERE bc = @bc
END