Skip to Content.
Sympa Menu

freetds - Re: [freetds] Set a warning on null values.

freetds AT lists.ibiblio.org

Subject: FreeTDS Development Group

List archive

Chronological Thread  
  • From: Frediano Ziglio <freddy77 AT gmail.com>
  • To: FreeTDS Development Group <freetds AT lists.ibiblio.org>
  • Subject: Re: [freetds] Set a warning on null values.
  • Date: Fri, 22 Jan 2010 14:31:05 +0100

2010/1/21 Matt Piskorz <mpiskorz AT hotmail.com>:
>
> Good day,
> I pinged the unixODBC list, but I was pointed to the freetds list.
> I'm connecting to MS Sql Server from Ubuntu using UnixODBC and freetds.  
> I'm having an issue with a query where I am getting back an extra record.
> Example:
> Rowset returned from sql client tool:RowID123
>
> Rowset returned from isql (unixodbc)RowID1233
> I receive this warning when I run the query in the ms sql client tool -
> "Warning: Null value is eliminated by an aggregate or other SET
> operation."If I run the query as is in unixodbc isql, then I get the 4th
> row.
> If I rewrite this query to remove the null, then I receive the correct
> recordset from the unixodbc isql tool.
> Question:  Is there a setting that I can set in the odbc.ini file (or
> someplace) that will return an error or a warning, instead of returning the
> 4th row? I'm an admin of a box, and I don't have full control over the
> queries that get and people are complaining the result sets are incorrect,
> when instead the query needs to be edited.
> If you want to reproduce the error, this is a sample set up that you can
> use:
> create table test(c1 int null, c2 int null) insert into test select 1,1
> insert into test select 1,2 insert into test select 1,null
> Now run these from isql on ubuntu. select max(case when c1 = 1 then c2 end)
> from test  --this returns 2 rowsselect max(case when c1 = 1 then c2 end)
> from test where c2 is not null -- this returns 1 row
> Thanks for taking a look.Matt
>

I got 1 row using both select you posted.... Ubuntu 9.04 with unixODBC
and CVS HEAD.... which FreeTDS version are you using ?? I remember a
similar problem (many many time ago...)

bye
freddy77




Archive powered by MHonArc 2.6.24.

Top of Page