Query Optimization

The biggest speed-ups can be seen by reprogramming your SQL statements so they are more efficient. If you follow these tips, your server will thank you:

Image Select as little data as possible. Rather than SELECT *, select only the fields you need.

Image If you need only a few rows, use LIMIT to select the number you need.

Image Declare fields as NOT NULL when creating tables to save space and increase speed.

Provide default values for fields ...

Get Ubuntu Unleashed 2014 Edition: Covering 13.10 and 14.04,Ninth Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.