How to get a SQL Server stored procedure return value using pyodbc?

Question

My team\'s using a python-based wiki server that calls stored procedures on a SQL Server database. Ideally, we\'d like to return integer values (1,0,-1) from the stored proc

Answer 1

I'm using this:

def CallStoredProc(conn, procName, *args):
    sql = """DECLARE @ret int
             EXEC @ret = %s %s
             SELECT @ret""" % (procName, ','.join(['?'] * len(args)))
    return int(conn.execute(sql, args).fetchone()[0])

It only works on SQL Server (or maybe Sybase), but it's a decent workaround.

Answer 2

I added the following to get it to work in my application:

def CallStoredProc(conn, procName, *args):
    sql = """SET NOCOUNT ON;
         DECLARE @ret int
         EXEC @ret = %s %s
         SELECT @ret""" % (procName, ','.join(['?'] * len(args)))
    return int(conn.execute(sql, args).fetchone()[0])

Answer 3

Here's some relevant information: http://code.google.com/p/pyodbc/wiki/StoredProcedures

It sounds like return values are still not supported, so you'll need to use a SELECT.