For questions about making database queries run faster.
In literature SQL query efficiency is often measured in "queries pre second" (QPS). How those measures are made, considering that …
mysql query-optimizationI've read on some blogs and in some articles related to optimization, how to optimize queries. I read I need …
mysql query-optimizationI am trying to force MySQL to use two indexes. I am joining a table and I want to utilize …
sql mysql query-optimization intersectI have two tables: CREATE TABLE `articles` ( `id` int(11) NOT NULL AUTO_INCREMENT, `title` varchar(1000) DEFAULT NULL, `last_updated` datetime …
mysql sql join query-optimizationBelow two queries are subqueries. Both are the same and both works fine for me. But the problem is Method 1 …
mysql sql phpmyadmin query-optimization subqueryBelow is my query. I am trying to get it to use an index scan, but it will only seq …
postgresql indexing query-optimization postgresql-9.1 postgresql-performanceThis may be a silly question, but it may shed some light on how joins work internally. Let's say I …
sql query-optimizationSay I have a table order as id | clientid | type | amount | itemid | date ---|----------|------|--------|--------|----------- 23 | 258 | B | 150 | 14 | 2012…
sql performance postgresql query-optimizationI have two massive tables with about 100 million records each and I'm afraid I needed to perform an Inner Join …
sql sql-server sql-server-2008 query-optimization inner-joinIn recent times, a particular page in my web app throws the Exception Details: MySql.Data.MySqlClient.MySqlException: Timeout expired. …
c# mysql query-optimization ibatis timeoutexception