in reply to Re^2: Long-running DB query makes Tk application unresponsive
in thread [solved] Long-running DB query makes Tk application unresponsive

The problem is how to break up your long running query into small enough chunks that your gui remains responsive. Once you've done that, you could just use a Tk-repeat().

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
The "good enough" maybe good enough for the now, and perfection maybe unobtainable, but that should not preclude us from striving for perfection, when time, circumstance or desire allow.

In Section Seekers of Perl Wisdom