[Mono-list] Empty string saved as null in sql server

[Veerapuram Varadhan]

Hi Scott, 

While I look into this in 2.4.2, would you mind trying any of the
daily-snapshots of trunk?

Thanks,

V. Varadhan

On Tue, 2009-07-28 at 14:50 -0700, srf wrote:
> oh yes, I forgot to mention, it was mono 2.4.2 production release. Were those
> patches after this release. If you know that it was addressed in a commited
> patch I could get the latest daily and try it.
> 
> thanks
> 
> scott
> 
> Nagappan wrote:
> > 
> > Hello Scott,
> > 
> > Which version of Mono are you using ? I remember Varadhan have recently
> > committed lots of fix related to this area in ADO.NET.
> > 
> > Thanks
> > Nagappan
> > 
> > On Tue, Jul 28, 2009 at 2:18 PM, srf <Scott.Fluto at cmgl.ca> wrote:
> > 
> >>
> >> I cant give you the exact ado .net commands since we use an Nhibernate
> >> Orm
> >> but using its tracing , this is what its preparing:
> >> INSERT INTO dbo.[EntityLabel] ([commitcount], [Saved], [Username],
> >> [Comment], [IsSnapshot], [Name], [Created], [Description], Id) VALUES
> >> (@p0,
> >> @p1, @p2, @p3, @p4, @p5, @p6, @p7, @p8); @p0 = '1', @p1 = '', @p2 =
> >> 'Default', @p3 = '', @p4 = 'False', @p5 = '', @p6 = '7/28/2009 9:11:29
> >> AM',
> >> @p7 = '', @p8 = '1c0a122a-1e26-4fc7-af5b-70c19f783188'
> >>
> >> Note the p1 ,p3 and p5 values are empty strings. WHen I trace its using
> >> the
> >> sqlserver profiler, the sql generated and being sent to the databaswe is
> >> actually null values. When I try this on windows everything is the same
> >> except that the empty strings remain as empty string.  I noticed that
> >> everywhere when we insert empty strings they get inserted as nulls so it
> >> seems to be common to everything. Do you have any thoughts on why this
> >> would
> >> be happening. Is there some asumptions mono is taking to decide to set
> >> them
> >> to null? As far as I know the only way it should is if I use the
> >> System.Dbnull type
> >>
> >> thanks
> >>
> >> scott
> >>
> >>
> >> Nagappan wrote:
> >> >
> >> > Hello Scott,
> >> >
> >> > Can you post a sample test to reproduce the issue you have mentioned
> >> here
> >> > ?
> >> >
> >> > Thanks
> >> > Nagappan
> >> >
> >> > On Tue, Jul 28, 2009 at 1:41 PM, srf <Scott.Fluto at cmgl.ca> wrote:
> >> >
> >> >>
> >> >> if I have a field that is an empty string rather than a null , when it
> >> >> gets
> >> >> saved it inserts a null rather than an empty string. With windows its
> >> >> works
> >> >> properly and stored an empty string. Has anyone else noticed this and
> >> had
> >> >> problems storing an empty string rather than a null value into a
> >> >> sqlserver
> >> >> 2005 database or any other database?
> >> >>
> >> >> thanks
> >> >>
> >> >> scott
> >> >> --
> >> >> View this message in context:
> >> >>
> >> http://www.nabble.com/Empty-string-saved-as-null-in-sql-server-tp24707463p24707463.html
> >> >> Sent from the Mono - General mailing list archive at Nabble.com.
> >> >>
> >> >> _______________________________________________
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> >> >>
> >> >
> >> >
> >> >
> >> > --
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> >> > http://ldtp.freedesktop.org
> >> > http://nagappanal.blogspot.com
> >> >
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> >>
> >> --
> >> View this message in context:
> >> http://www.nabble.com/Empty-string-saved-as-null-in-sql-server-tp24707463p24708036.html
> >> Sent from the Mono - General mailing list archive at Nabble.com.
> >>
> >> _______________________________________________
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> >>
> > 
> > 
> > 
> > -- 
> > Linux Desktop (GUI Application) Testing Project -
> > http://ldtp.freedesktop.org
> > http://nagappanal.blogspot.com
> > 
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>