Myth Directory


In an attempt to thin out the dark woods of database performance myths, I list and explain some of the most common myth and misbeliefs here.

About the Author

Photo of Markus Winand
Markus Winand tunes developers for high SQL performance. He also published the book SQL Performance Explained and offers in-house training as well as remote coaching at http://winand.at/

?Recent questions at
Ask.Use-The-Index-Luke.com

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"Order by RAND()" - can use Index?

Feb 23 at 12:06 Markus Winand ♦♦ 936
random index mysql order-by-rand
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index for better performance for a merge operation

Feb 20 at 11:43 antilet 1
merge index
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Join with inequalities only

Dec 16 '14 at 12:06 Markus Winand ♦♦ 936
inequality join