…is a lot larger problems with MySQL 5.5 with addition of user variables, stored procedures, prepared statements etc which can be a… cache reduces memory consumption to be withing the reason. Connection Related Allocations Another set of buffers correspond to connections – orphaned prepared statements…
Post: MySQL Prepared Statements
August 2, 2006 By 19 Comments
… MySQL 4.1 Prepared statement came. Do not mix these native Server Side Prepared Statements with emulated prepared statements …statement, prepared statement and have it served from query cache. Prepared statements give 2290 queries/sec which is significantly better than 2000 with standard statements…
Post: Wishes for new "Pure PHP" MySQL driver
October 28, 2006 By 17 Comments
… me. Arrays in Prepared Statements Dealing with certain types of queries, ie queries with IN is so painful with prepared statements – I would like… emulating. Cached Prepared Statements It would be great if library could cache them so you do not have to worry of tracking same statements in… like to be able to run multiple queries for multiple MySQL connections at once. For scale out applications data to generate…
Post: MySQL Query Cache and prepared statements - support comming ?
March 15, 2007 By Leave a Comment
… Cache working with prepared statements in MySQL 5.1 The interesting thing Konstantin notes it just took few days to fix it – I believe MySQL… want to have fast prepared statements without query cache or no prepared statements with it. Would this make me use/advice Query Cache more ? Not really…
Post: DBD::mysql 4.014 breaks pt-table-checksum 2.0
February 21, 2012 By Leave a Comment
… in DBD::mysql. This bug affects pt-table-checksum 2.0 but not 1.0 because the newer version uses prepared statements with parameter values, whereas the older version does not. It seems, although I have not verified this, that DBD::mysql 4.014 has some sort of caching mechanism which causes it to use the wrong prepared statement.
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_long_data call – Server buffers such data until you have executed prepared statement. Innodb Table Cache Leak – Innodb…
Post: MySQL Query Cache
July 27, 2006 By 69 Comments
… thinking MySQL Query Cache is the same as Oracle Query Cache – meaning cache where execution plans are cached. MySQL Query Cache is not. It does not cache …not support prepared statements and cursors Query Cache works with query text and want full result set at once. In prepared statements there is …
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
…MySQL manual,…sizeblogpercona.commanual Prepared_stmt_…cache_hitsblogpercona.commanual Ssl_session_cache_missesblogpercona.commanual Ssl_session_cache_modeblogpercona.commanual Ssl_session_cache_overflowsblogpercona.commanual Ssl_session_cache_sizeblogpercona.commanual Ssl_session_cache…
Post: New SpecJAppServer results at MySQL and Sun.
November 12, 2008 By Leave a Comment
… can also see Server prepared statements were disabled for the run (same as we had few years ago). Prepared statements generally should have helped… thread_cache = 16 query_cache_size = 0M thread_concurrency = 8 max_heap_table_size=200M log-output = FILE log-slow-queries=/tmp/mysql…
Post: Top 5 Wishes for MySQL
June 29, 2007 By 10 Comments
… saying about Prepared Statements in MySQL 4.1 which came without query cache support but even worse not all of statements could be prepared not to mention other issues. I’m saying about SubSelects which were added in MySQL 4.1… for very long time. For example Query Cache support for Prepared Statements is only fixed in MySQL 5.1 and Most of other items…
