https://github.com/adjust/pg_querylog

Show queries running on PostgreSQL backends
https://github.com/adjust/pg_querylog

Last synced: about 2 months ago
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Show queries running on PostgreSQL backends

• Host: GitHub
• URL: https://github.com/adjust/pg_querylog
• Owner: adjust
• Created: 2019-03-29T12:40:42.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2020-07-24T19:33:16.000Z (almost 6 years ago)
• Last Synced: 2025-03-09T14:41:57.010Z (over 1 year ago)
• Language: C
• Homepage:
• Size: 28.3 KB
• Stars: 2
• Watchers: 4
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

          
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pg_querylog

===========

Show queries running on PostgreSQL backends.

Installation

------------

	make && make install

	echo "shared_preload_libraries='pg_querylog'" >> postgresql.conf

	psql postgres -c "create schema querylog; create extension pg_querylog schema querylog;"

	

Also you can use `session_preload_libraries`, but then `enabled` option should be always `on` since each starting

backend will rewrite the value.

	echo "session_preload_libraries='pg_querylog'" >> postgresql.conf

Using

-----

Make sure it's loaded:

	show session_preload_libraries

and enabled (by default it is disabled):

	show pg_querylog.enabled

Get all saved queries using `get_queries` function:

	select * from querylog.get_queries()

Result columns:

* `pid` - backend process ID

* `query` - running (or runned) query

* `params` - query parameters in case of parametrized query

* `start_time` - query start time

* `end_time` - query end time (if `running` == false)

* `running` - running status

* `overflow` - shows that `buffer_size` is enough for this item

Parameters:

* `pg_querylog.buffer_size` - buffer size for each saved query, calculated as sum of lenghts of query and its params.

* `pg_querylog.enabled` - controls saving queries.

For only running queries `running_queries` use this view:

	select * from querylog.running_queries;