Slide 28
Slide 28 text
EffectiveMySQL.com - Performance, Scalability, Site Reliability
RAT PROCESSING
SELECT name FROM firms WHERE id=727;
SELECT name FROM firms WHERE id=758;
SELECT name FROM firms WHERE id=857;
SELECT name FROM firms WHERE id=740;
SELECT name FROM firms WHERE id=849;
SELECT name FROM firms WHERE id=839;
SELECT name FROM firms WHERE id=847;
SELECT name FROM firms WHERE id=867;
SELECT name FROM firms WHERE id=829;
SELECT name FROM firms WHERE id=812;
SELECT name FROM firms WHERE id=868;
SELECT name FROM firms WHERE id=723;
SELECT id, name
FROM firms
WHERE id IN (723, 727, 740, 758, 812, 829, 839, 847, 849, 857, 867, 868);
✘
DB
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Classic N+1 problem