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SQL Performance Explained
● How indexes work
○ Multiple databases : Oracle, MySQL, PostgreSQL, etc.
○ Multiple languages : PHP, Java, etc.
● Written by Markus Winand
● Available in EN, JP, GE, FR, SP
○ Japanese ver. translator = me
● Buy at http://sql-performance-explained.com/
○ JP : http://sql-performance-explained.jp/
● Free Web Edition: http://use-the-index-luke.com/