…keys on composite indexes Let’s start with an example: mysql> show create table t; [...] KEY `key_name` (`name`), KEY `key…keys contains the primary key column. Let’s see the following example: mysql> show create table t; [...] PRIMARY KEY (`i`), KEY `key…
Comment: Database problems in MySQL/PHP Applications
August 11, 2006 By 13 Comments
…performance implications. Remember that if you don’t create either a unique key or a column with an auto_increment primary key…make InnoDB use a composite UNIQUE key on a table as a primary key taking up far … database background. > Things are different with MySQL. Good design will help dictate how …
Comment: INSERT INTO ... SELECT Performance with Innodb tables.
March 7, 2012 By 22 Comments
…am using AWS MySQL RDS, InnoDB engine. Our requirement is to insert data … = input_my_id (myid is 1st column of composite (5 columns) primary key). Reading and Writing in same table. For 22,… reduce further? Is there anyway I can improve the performance? We can use OUTFILE method as suggested by Peter…
