code logs -> 2019 -> Sun, 02 Jun 2019< code.20190601.log - code.20190603.log >
--- Log opened Sun Jun 02 00:00:04 2019
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02:00
<@iospace>
http://www.openculture.com/2019/05/the-first-museum-dedicated-to-japanese-folklore-monsters-is-now-open.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+OpenCulture+%28Open+Culture%29&utm_content=FaceBook&fbclid=IwAR0X4cSf-pIr8fjHAyakZJ9KzQ2zf_G4YoR5XfNzksDzfhZcgGtDyBnUNeU
02:00
<@iospace>
Oops
02:00
<@iospace>
Wrong link
02:00
<@iospace>
https://twitter.com/Zorchenhimer/status/1134178911628267520
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23:11 * TheWatcher args at the emacs perl major mode's handling of parenthesis
23:22 * TheWatcher eyes this SQL query
23:26
<@TheWatcher>
Why is it so hard to find out the cost of certain sorts of SQL operation without having to do the bloody benchmarking yourself, ugh
23:28
<&McMartin>
... pretty sure the rule of profiling is always "measure, don't reason"
23:29
<&McMartin>
or is this "I can't even know the big-O cost of operations across implementations or even schemas within one implementation"
23:29
<@TheWatcher>
The latter
23:30
<@TheWatcher>
Or, more to the point, the impact of having multiple AND ... IN ( ... ) in a given query
23:31
<@TheWatcher>
"AND `a`.`foo` IN (1, 2, ... ) AND `a`.`bar` IN (9, 8, ...) AND `a`.`quux` IN ( 5, 6, ...)" etc
23:32
<@TheWatcher>
Amd I incurring temporary tables for each? I dunno!
23:35
<@TheWatcher>
Tomorrow I'll try running some tests over some tables with a few million rows, and see what I'm dealing with. But for now, slep.
23:48 * McMartin drinks tea while Fedora installs on his new drive.
--- Log closed Mon Jun 03 00:00:06 2019
code logs -> 2019 -> Sun, 02 Jun 2019< code.20190601.log - code.20190603.log >

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