Απορία SQL

[Thomas Venieris]

Στις 07-02-2011, ημέρα Δευ, και ώρα 18:21 +0200, ο/η V13 έγραψε:

> Se postgresql yparxei h 'EXPLAIN' h opoia mporei na soy pei poia apo tis dyo 
> einai h pio grigori. An den exei kati antistoixo h mysql, bale postgres kai 
> kane tis dokimes ekei. To apotelesma bebaia tha einai me bash ton optimizer 
> ths postgres alla mias kai to erotima einai aplo *ypotheto* pos tha isxyei to 
> idio kai se mysql.


Η MySQL έχει explain:

http://dev.mysql.com/doc/refman/5.1/en/explain.html

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