public inbox for [email protected]
help / color / mirror / Atom feedFrom: Igor Korot <[email protected]>
To: Adrian Klaver <[email protected]>
Cc: David G. Johnston <[email protected]>
Cc: Rob Sargent <[email protected]>
Cc: pgsql-generallists.postgresql.org <[email protected]>
Subject: Re: How to properly use TRIM()?
Date: Sat, 7 Mar 2026 15:46:42 -0600
Message-ID: <CA+FnnTwqP_-RcQSRCUMc4gpYk8ofNV11MJ_S2rYCpWhe3CPTmA@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <CA+FnnTwxSeLhR8zNZsoR2SAXYVf9Db+zi3+SpPqdBe==m3X-AQ@mail.gmail.com>
<[email protected]>
<CA+FnnTznxpXh8nAJhjnggpfYz0MEnEdK89FtejDNTmX87MktiA@mail.gmail.com>
<CAKFQuwYaVKcMU0wP3SAbct8FU0H4iy=E1HxxBY-gcvmoK-GsrQ@mail.gmail.com>
<CA+FnnTy5Fc5WdM=yPSL7bBDrGYHD2aQTwGbFZFuv9dHm_AAgGA@mail.gmail.com>
<[email protected]>
Hi, Adrian,
On Sat, Mar 7, 2026 at 3:29 PM Adrian Klaver <[email protected]> wrote:
>
> On 3/7/26 12:46 PM, Igor Korot wrote:
> > Hi, David,
> >
> > On Sat, Mar 7, 2026 at 12:03 PM David G. Johnston
> > <[email protected] <mailto:[email protected]>> wrote:
> >
> > On Sat, Mar 7, 2026 at 12:58 PM Igor Korot <[email protected]
> > <mailto:[email protected]>> wrote:
> >
> > So I started looking for a way to return SQL_NO_DATA
> > on that 4th column...
> >
> >
> > Doesn't "No Data" refer to the result set as a whole, not individual
> > columns? I'd assume NULL is detected some other way.
> >
> >
> > No, I think it’s column based.
>
> 1) My knowledge of ODBC is limited.
>
> 2) This:
>
> https://learn.microsoft.com/en-us/sql/odbc/reference/develop-app/return-codes-odbc?view=sql-server-v...
>
> "SQL_NO_DATA No more data was available. The application calls
> SQLGetDiagRec or SQLGetDiagField to retrieve additional information. One
> or more driver-defined status records in class 02xxx may be returned.
> Note: In ODBC 2.x, this return code was named SQL_NO_DATA_FOUND."
>
> would seem to indicate that David Johnston is correct:
From the SQLGetData() ODBC documentation
(https://learn.microsoft.com/en-us/sql/odbc/reference/syntax/sqlgetdata-function?view=sql-server-ver1...):
[quote]
When it returns the last part of the data, SQLGetData returns
SQL_SUCCESS. Neither SQL_NO_TOTAL nor zero can be returned on the last
valid call to retrieve data from a column, because the application
would then have no way of knowing how much of the data in the
application buffer is valid. If SQLGetData is called after this, it
returns SQL_NO_DATA. For more information, see the next section,
"Retrieving Data with SQLGetData."
[/quote]
However it looks like the driver does not behave as expected.
It keeps returning SQL_SUCCESS continuously...
Or am I misinterpreting the docs?
Thank you.
>
> 'Doesn't "No Data" refer to the result set as a whole, not individual
> columns? I'd assume NULL is detected some other way.'
>
> > The call to SQLGetData() returns data in one column.
> >
> > And as stated it successfully retrieves empty array for column 3 and
> > moves on.
> >
> > Thank you.
> >
> >
> > David J.
> >
>
>
> --
> Adrian Klaver
> [email protected]
reply
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: [email protected]
Cc: [email protected], [email protected], [email protected], [email protected], [email protected]
Subject: Re: How to properly use TRIM()?
In-Reply-To: <CA+FnnTwqP_-RcQSRCUMc4gpYk8ofNV11MJ_S2rYCpWhe3CPTmA@mail.gmail.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox