…is a lot larger problems with MySQL 5.5 with addition of user variables, stored procedures, prepared statements etc which can be a… 0 DATA_LENGTH: 16384 INDEX_LENGTH: 0 CREATE_TIME: NULL UPDATE_TIME: NULL *************************** 2. row *************************** SESSION_ID: 7234 TABLE_SCHEMA: …
Post: 10+ Ways to Crash or Overload MySQL
November 13, 2007 By 20 Comments
… consumed by single prepared statement you can create statement with thousands of placeholders and send data for each of them using mysql_stmt_send… simply keeping transaction open and allowing other users to do updates – Innodb only can purge data after oldest transactions needing snapshot…
Post: MySQL Query Cache
July 27, 2006 By 69 Comments
… “Query Cache” which is quite helpful for MySQL Performance optimization tasks but there are number… table is locked and is being prepared to be updated. So if you’re using query …prepared statements and cursors Query Cache works with query text and want full result set at once. In prepared statements…
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
… amazing MySQL manual, especially the option and …commanual preload_buffer_sizeblogpercona.commanual Prepared_stmt_countblogpercona.commanual print_defaultsblogpercona…isolationblogpercona.commanual unique_checksblogpercona.commanual updatable_views_with_limitblogpercona.commanual Uptimeblogpercona…
Post: MySQL extensions for hosting
April 24, 2008 By 11 Comments
…fetched: 7861 Rows_updated: 240 Select_commands: 1759 Update_commands: 254 Other_commands: 85 Commit_transactions: 0 Rollback_transactions: 0 mysql> SHOW …reading lots of rows support for prepared statements which all currently fall under Other_commands a few MySQL performance counters broken down by…
Comment: MySQL Prepared Statements
August 4, 2006 By 19 Comments
… found that not true. I use only prepared statements (prepared in perl dbi/dbd, no server prepares) on my site (http://www.tbg.nu… SELECT/INSERT/UPDATE/DELETE queries. But I dont know if that has to do with perl dbi/dbd or mysql server. The issues occurs when using $dbh->{‘mysql_server_prepare‘} = 1;
Post: Updated msl (microslow) patch, installation walk-through!
April 20, 2008 By 17 Comments
…couple of months there have been no updates to our msl patch, however recently I managed …Thank you for choosing MySQL! Otherwise you will see some error. The sources have been prepared for compilation, so … SET GLOBAL. log_slow_rate_limit=# Rate limit statement writes to slow log to only those from …
Comment: InnoDB vs MyISAM vs Falcon benchmarks - part 1
September 20, 2007 By 117 Comments
… be applied for, and all ‘universal’ is called ‘horilla’ in MySQL forums: Oracle, DB2. Want to compare test results for a… countries, cities, postal codes), and I need InnoDB for frequently updated data. One weakness: JDBC driver + Prepared Statements. Thanks
Comment: MySQL Prepared Statements
September 3, 2008 By 19 Comments
I devised a benchmark, comparing updating a table using a statement-at-a-time versus using a prepare/execute pair. The table had a million rows and each row was updated. The statement… using @id . I had thought the prepare/execute file would run faster, since supposedly mysql had already done a hard parse on…
Comment: Database problems in MySQL/PHP Applications
August 11, 2006 By 12 Comments
… right that when used properly, prepare can (if used properly) help…background. > Things are different with MySQL. Good design will help dictate… add processing time to inserts, updates, and deletes but there are other …benefit available. Making a blanket statement that using relations is bad is unwise…
