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voxxit/Power of Indexing

Created June 25, 2009 20:14
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Power of Indexing
# Without indexes
ForecastPoint Load (20.1ms) SELECT warning_date_time FROM `forecast_points` ORDER BY warning_date_time DESC LIMIT 1
ForecastPoint Load (11.7ms) SELECT * FROM `forecast_points` WHERE (`forecast_points`.`warning_date_time` = '2005-09-18 00:00:00')
# With a simple index on warning_date_time
ForecastPoint Load (0.4ms) SELECT warning_date_time FROM `forecast_points` ORDER BY warning_date_time DESC LIMIT 1
ForecastPoint Load (0.7ms) SELECT * FROM `forecast_points` WHERE (`forecast_points`.`warning_date_time` = '2005-09-18 00:00:00')
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