Most mysql order by random related news are at:
More mysql order by random related news:
List of Awesome liquidninja.com 7 Jun 2010 | 03:34 pm
The following are some techy things that I currently think are, well, awesome. Either things that consistently put a smile on my face or just keep me regularly stimulated. (Note: the order is random.)...
mysql order by asc desc 优化 mysqlinfo.com 14 Jun 2012 | 10:22 am
今天遇到个问题 mysql 有种sql语句查询效率不高,用完索引后仍然有filesort排序 select * from table_name where a=xx order by b asc,c desc; 开始觉得可能用索引就可以解决比如 建立 create index idx_x on table_name(a,b asc,c desc); 后来发现仍然不走索引，是mysql的一个b...
MySQL 5.5 on Ubuntu 12.04 – Job Failed to Start mlynn.org 23 Jul 2012 | 04:05 pm
I migrated a web site from one host to another and as such upgraded to MySQL 5.5 running on Ubuntu 12.04. Everything was moving along nicely until MySQL started to randomly crash. Trying to start th...
Code Snippet – MySQL Tutorial : Membuat Random Unique Key Dengan Fungsi UUID() gedelumbung.com 26 May 2013 | 02:41 am
Eaaaaa, hasrat untuk menulis lagi tinggi-tingginya di malam minggu ini. Gara-gara dari beberapa hari yang lalu saya penasaran dengan sistem website kaskus yang baru. Dimana untuk setiap thread dan rep...
回复于: mysql order by 和limit索引的问题 askhellodba.com 19 Feb 2013 | 08:15 am
你的表有多少条记录？第三个肯定是不走索引的。当查询的记录超过表总量的一定比例就会直接全表扫描。比例是多少来着我忘记了。。 其他几种情况就不知道了。
Dunkin' Donuts Worker Beaten, Pistol-Whipped Over Botched Vanilla Coffee Order itsguycode.com 22 Aug 2013 | 08:14 pm
By : Random Guy
MySQL ORDER BY RAND() – Qual a melhor forma de fazer? jf.eti.br 23 Aug 2013 | 09:45 am
Essa é uma dúvida que volta e meia aparece nos fóruns, como obter linhas aleatórias em uma query. Normalmente o que vemos é algo assim: SELECT * FROM tabela ORDER BY rand(); Contudo, o que muitos nã...
New Item-Carter's pants 5 in 1pack is ready for wholesale oshbabycollection.blogspot.com 25 Aug 2013 | 10:01 am
MOQ6 3,6,,9,12,18,24m no dog and pig design all order send random design
A Tale Of Two County Fairs: Part II adaptivecurmudgeon.wordpress.com 20 Aug 2013 | 02:09 pm
Recently I went to two rural country fairs. You can learn a lot about America at a county fair. Here, in no particular order, are random observations: I expected to see herds of mutant whack jobs in ...
mysql order by null netingcn.com 11 Aug 2013 | 08:28 pm
order by null用途是强制对查询结果禁用排序。通过explain检查查询语句时候，如果看到Extra列中有Using filesort，这是对性能有一定影响的，特别是使用了group by时，就算你没有显示的指定order by，mysql会默认按照分组字段进行排序。某些情况下是没有必要使用排序的，例如在处理表报数据的时候（把原始表数据统计后插入到一个用于报表查询的表），则完全可以可以使...
