June 19, 2013

Post: InnoDB Full-text Search in MySQL 5.6: Part 2, The Queries!

… a single VARCHAR column named “value“. OK, sounds easy enough: mysql: SHOW CREATE TABLE innodb_myisam_…mysql: SET GLOBAL innodb_ft_server_stopword_table=’test/innodb_ft_list2′; Query OK, 0 rows affected (0.00 sec) mysql: INSERT…about a Boolean mode query? The docs tell us that if we use Boolean mode,…

Post: MySQL Server Variables - SQL layer or Storage Engine specific.

…for in memory tables. So first MySQL versions did not bother naming …inserts (multiple value inserts). Really helps if you have really bulk inserts 100-1000+ values per single insert statement. concurrent_insert – Enables concurrent insert…sure data hits the disk ft_boolean_syntax, ft_max_word_len, ft…

Post: Identifying the load with the help of pt-query-digest and Percona Server

… not just for new connections as in MySQL. This is very helpful for measurement as… 260 0.0002 1.00 0.00 INSERT poller_output # MISC 0xMISC 0.8137 10….0 0 0 0 0 0 0 # Boolean: # Full scan 100% yes, 0% no # String: #… you might even compress the values stored in the option_value column so that less data…

Comment: Database problems in MySQL/PHP Applications

… background. > Things are different with MySQL. Good design will help dictate …references may add processing time to inserts, updates, and deletes but there are other…cost of the benefit versus the value added by having the benefit …rows with an index on a Boolean column for example) is unlikely …

Comment: Using delayed JOIN to optimize count(*) and LIMIT queries

… “lower” characters ! Yes I often use this too, in MySQL and in Postgres, it is just one of the…greater (or lower depending on the order) to the value computed above will not appear in the final …boolean OR/AND mix of my indexes so it will never even look at those rows that don’t match. – I insert