rihad <rihad@xxxxxxx> writes:
LOOP
SELECT date+1 INTO day FROM days WHERE date=day OR EXTRACT(dow
FROM day) IN (0,6);
EXIT WHEN NOT FOUND;
timeout := timeout + 86400;
END LOOP;
If the EXTRACT condition is true, then the SELECT will always succeed.
Isn't the new "day" re-evaluated on every loop iteration? I'm totally
confused.
It's morning again over at our place, so... of course it's not! I
stupidly did a SELECT date+1 instead of SELECT day+1, resulting in an
infinite loop. A hard to spot bug, especially when your eyes are half
closed. Good thing is that the solution came to me while I was still in
bed a minute ago :-)
But your idea later on of separating EXTRACT outside the disk-touching
code might be a nice cpu-memory trade-off that I hadn't thought of (or
wasn't aware). It turns out any SQL "thing" can be in an IF or WHILE
etc. ? I'll go read the docs more attentively.
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TIP 2: Don't 'kill -9' the postmaster
