Hm, thank you for the SQL construction suggestions. I have tried to push as much as possible onto the server, but I'm not an SQL expert; perhaps I should find one to take a look at my statements. Unfortunately, I'm not sure there's a whole lot of optimization I can do in this manner, as a large portion of my work is to get DB records and compare them with text files or other data sources.

I don't ever open multiple connections, except when there are multiple instances of my application (which can't be helped), so that isn't the cause of my woes. One db handle is enough, thank you. ;-)

I can't prove that it's the ODBC driver that's the problem. I do know that performing an identical query using a third-party SQL tool is much faster (even when I account for connection times). I also know that native access methods are often faster as opposed to ODBC, so I'm hoping to find a DBD driver that uses MS-SQL natively. I can at least benchmark, then.

Finally, while my performance is "acceptable" to my users and my employer, I consider it borderline; I'm wanting to refactor before adding yet more DB things.

I wish I could just post the code, but NDA and all that... so please ask me anything you need to help you formulate a starting point for me to research.

radiantmatrix
require General::Disclaimer;
Perl is

In reply to Re^3: Improving on MS-SQL over DBI and DBD::ODBC by radiantmatrix
in thread Improving on MS-SQL over DBI and DBD::ODBC by radiantmatrix

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