Re: iSeries SQL and identity columns -- RPG400-L

× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.

On 2/1/11 10:16 AM, terry_bullard@xxxxxxxxxxxx wrote:

Have been having some performance issues with web pages hitting our
iSeries. Set up SQL Exit program to be able to capture/log odbc sql
statements. Looking in my log file - the overwhelming log entries
have the following sql statement.

SELECT identity_generation FROM QSYS2/SYSCOLUMNS
WHERE identity_generation is not null
AND column_name = ?
AND table_name = ?
AND table_schema = ?

<<SNIP>> is this a system generated statement? I ask because the
developers who have written most of our web pages are telling me they
don't recognize this either???

<<SNIP>>

The database would have no need to perform such a query, so the statement is very _unlikely_ to have been "system-generated" by\at the server. Every TABLE has a "record format" that defines whether the file has an IDENTITY column, thus there is no reason for the database to query if\which column has that attribute, since that information is available directly from the TABLE itself. Some client application might have some "need" to perform such a query, but I could not guess why.

Regards, Chuck

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.