02-20-2019
Quote:
Originally Posted by
figaro
I have a big, ugly query which is quadratic in the input size and therefore want to display an approximate completion time prior to sending it off:
I don't see the link between what you want and the query and like you have said it's not correct. So, to analyze the query you have the explain command to get information about the plan that will be used and from there you can estimate quick query and slow query.
See the official web site for "EXPLAIN"
The other option is to do it on the application side.
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LEARN ABOUT DEBIAN
jifty::plugin::sqlqueries
Jifty::Plugin::SQLQueries(3pm) User Contributed Perl Documentation Jifty::Plugin::SQLQueries(3pm)
NAME
Jifty::Plugin::SQLQueries - Inspect your application's SQL queries
DESCRIPTION
This plugin will log each SQL query, its duration, its bind parameters, and its stack trace. Such reports are available at:
http://your.app/__jifty/admin/requests
USAGE
Add the following to your site_config.yml
framework:
Plugins:
- SQLQueries: {}
You can turn on and off the stacktrace, as well as an "EXPLAIN" of each query, using options to the plugin:
framework:
Plugins:
- SQLQueries:
stacktrace: 0
explain: 1
The plugin defaults to logging the stack trace, but not the explain.
METHODS
init
Sets up a "post_init" hook.
inspect_before_request
Clears the query log so we don't log any unrelated previous queries.
inspect_after_request
Stash the query log.
inspect_render_summary
Display how many queries and their total time.
inspect_render_analysis
Render a template with all the detailed information.
post_init
Tells Jifty::DBI to log queries in a way that records stack traces.
prereq_plugins
This plugin depends on Jifty::Plugin::RequestInspector.
COPYRIGHT AND LICENSE
Copyright 2007-2010 Best Practical Solutions
This is free software and may be modified and distributed under the same terms as Perl itself.
perl v5.14.2 2010-12-10 Jifty::Plugin::SQLQueries(3pm)