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If you didn't get a 4 or 5 out of 5, you should go through this website, it's pretty awesome. It explains SQL performance really well, and provides equivalent e
by acconrad 9y ago
If you didn't get a 4 or 5 out of 5, you should go through this website, it's pretty awesome. It explains SQL performance really well, and provides equivalent examples for whatever database you use (including Oracle and DB2 in addition to MySQL and Postgres).