Re: How to properly use TRIM()?

On 3/7/26 12:46 PM, Igor Korot wrote:
> Hi, David,
>
> On Sat, Mar 7, 2026 at 12:03 PM David G. Johnston
> <david(dot)g(dot)johnston(at)gmail(dot)com <mailto:david(dot)g(dot)johnston(at)gmail(dot)com>> wrote:
>
> On Sat, Mar 7, 2026 at 12:58 PM Igor Korot <ikorot01(at)gmail(dot)com
> <mailto:ikorot01(at)gmail(dot)com>> 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-ver17

"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:

'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
adrian(dot)klaver(at)aklaver(dot)com