How to make a MySql query faster?
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I have about 1 million rows on users table and have columns A AA B BB C CC D DD E EE F FF by example to count int values 0 & 1 SELECT CityCode,SUM(A),SUM(B),SUM(C),SUM(D),SUM(E),SUM(F),SUM(AA),SUM(BB),SUM(CC),SUM(DD),SUM(EE),SUM(FF) FROM users GROUP BY CityCode Result 8 rows in set (24.49 sec). How to make my statement more faster?
Answer:
Use explain to to know the excution plan of your query. Create atleast one or more Index. If possible...
emma at Stack Overflow Mark as irrelevant Undo
Other solutions
Answer:
All MySQL user accounts can be made by querying "CREATE '[username]' @ '[server]' IDENTIFIED BY...
community wiki at wiki.answers.com Mark as irrelevant Undo
I have 2 tables, one named ARTICLE and one named COMMENTS. Say ARTICLE table contains … -ID - article And COMMENT table contains… -ID -article_id (which will be related to “ ID” in the articles table) -comment I have a simple...
Answer:
SELECT a.id AS "Article ID", COUNT(*) AS "Number of Comments" FROM article a JOIN...
TheMadPr... at Yahoo! Answers Mark as irrelevant Undo
I have the following line in my plugin to remove transients from the database option table. $wpdb->query( "DELETE FROM `wp_options` WHERE `option_name` LIKE ('_transient%_feed_%')" ); However, it won't work with sites which set a prefix...
Answer:
Use the global wordpress variable $table_prefix in your query: $wpdb->query( "DELETE FROM ...
Nicholas Pickering at Quora Mark as irrelevant Undo
I am using MySQL database. When I execute a query which the main table(20 thousands of rows) is joined with the other 5 tables, it takes 90 seconds to return me the result. I then added indices into each of the criteria(where clause). Then the execution...
Answer:
Optimizing MySQL queries is a fairly straightforward process. To solve your problem would require a...
Juan Cristián Vera Huneeus at Quora Mark as irrelevant Undo
I need to get MySQL working with Visual Studio 2005. I come from the PHP world, and while I know C, C# is a new language to me. There's two issues. First, VS2k5 doesn't seem to allow me to add a MySQL (using Connector/Net 1.07) database as a project...
Answer:
Oh, and the reason that I can't switch to MsSQL is that this is a tool to do some important stuff with...
SpecialK at Ask.Metafilter.Com Mark as irrelevant Undo
How can I strip the seconds off when displaying a MYSQL datetime variable, using only PHP commands, not MYSQL commands like "DATE_FORMAT"? I have a form where users enter a few dates and times. I don't care about seconds, just the year, month...
Answer:
And converting to a unix timestamp can be done with strtotime, like so: date("Y/m/d H:m",...
Bugbread at Ask.Metafilter.Com Mark as irrelevant Undo
When I try to make a MySQL query string ("SELECT Name, Desc, Link FROM Site") I get this error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Desc, Link...
Answer:
Sorry im not being smart but none of that makes any sense to me.. What is an SQL version 4. 1. 22 standard...
Tom at Yahoo! Answers Mark as irrelevant Undo
I am making a 'Richest Person List' on my Website. This is the Code: <div class="box2"> <p class="chat">Richest Person of the Month!</p> <br></br> <?php // Make a MySQL Connection $host = "CENSORED...
Answer:
use sub query! select username, balance from iconomy where balance = (select max(balance) from iconomy...
GregoryI... at Yahoo! Answers Mark as irrelevant Undo
the format must be (01 03 04 05 06 07 08 09)|(70 71 76)-XXXXXX where X can be any number from 0 to 9. A working example would be: 03-769112 or 71-682315 or 09-001241. I made myself a PHP regular expression that works very well for this and it's: "...
Answer:
This could be the technical issue... Report it to the service to get things fixed..... Good luck!
[E][M] at Yahoo! Answers Mark as irrelevant Undo
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