Skip navigation links

MySQL Forums :: Optimizer & Parser :: 2 column between optimization


Advanced Search

Re: 2 column between optimization
Posted by: Brad Culberson ()
Date: September 02, 2005 02:25PM

+------------+
| version() |
+------------+
| 4.1.13a-nt |
+------------+

CREATE TABLE `geo_feature` (
`latitude` float default NULL,
`longitude` float default NULL,
`feature` varchar(50) default NULL,
KEY `GeoFeatureLocationBoundingBox` (`latitude`,`longitude`),
KEY `GeoFeatureLatitude` (`latitude`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8


| Table | Non_unique | Key_name | Seq_in_index | Column_name
| Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment |
+-------------+------------+-------------------------------------------+--------------+---------------------------------
--+-----------+-------------+----------+--------+------+------------+---------+
| geo_feature | 1 | GeoFeatureLocationBoundingBox | 1 | latitude
| A | 239523 | NULL | NULL | YES | BTREE | |
| geo_feature | 1 | GeoFeatureLocationBoundingBox | 2 | longitude
| A | 2155714 | NULL | NULL | YES | BTREE | |
| geo_feature | 1 | GeoFeatureLatitude | 1 | latitude
| A | 239523 | NULL | NULL | YES | BTREE | |


For this optimization, We need to pull all the data in a certain bounding area by lat/lon thus the following query:

Select * from geo_feature where latitude BETWEEN .06494 and 0.7384 and longitude between -1.234 and -1.1212;

also tried:

Select * from geo_feature where latitude > .06494 and latitude < 0.7384 and longitude > -1.234 and longitude < -1.1212;

Thanks,
Brad

Options: ReplyQuote


Subject Views Written By Posted
2 column between optimization 5028 Brad Culberson 09/02/2005 12:39PM
Re: 2 column between optimization 2362 Felix Geerinckx 09/02/2005 02:01PM
Re: 2 column between optimization 2386 Brad Culberson 09/02/2005 02:25PM
Re: 2 column between optimization 2240 Felix Geerinckx 09/02/2005 03:38PM
Re: 2 column between optimization 2181 Brad Culberson 09/06/2005 09:17PM
Re: 2 column between optimization 2221 Jay Pipes 09/05/2005 12:03PM
Re: 2 column between optimization 2187 Brad Culberson 09/06/2005 09:18PM
Re: 2 column between optimization 2162 KimSeong Loh 09/04/2005 07:21PM
Re: 2 column between optimization 2147 Brad Culberson 09/06/2005 09:14PM
Re: 2 column between optimization 2313 Jay Pipes 09/06/2005 09:22PM
Re: 2 column between optimization 2098 Brad Culberson 09/06/2005 11:17PM
Re: 2 column between optimization 2086 KimSeong Loh 09/07/2005 02:54AM
Re: 2 column between optimization 2409 Jay Pipes 09/07/2005 02:48AM
Re: 2 column between optimization 2264 Brad Culberson 09/07/2005 12:25PM
Re: 2 column between optimization 2104 Jay Pipes 09/07/2005 12:54PM


Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.