I have a PostgreSQL DB at my computer and I have an application that runs queries on it.
How can I see which queries has run on my DB?
I use a Linux computer and pgadmin.
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PostgreSql is very advanced when related to logging techniques
Logs are stored in Installationfolder/data/pg_log folder. While log settings are placed in postgresql.conf file.
Log format is usually set as stderr. But CSV log format is recommended. In order to enable CSV format change in
log_destination = 'stderr,csvlog'
logging_collector = on
In order to log all queries, very usefull for new installations, set min. execution time for a query
log_min_duration_statement = 0
In order to view active Queries on your database, use
SELECT * FROM pg_stat_activity
To log specific queries set query type
log_statement = 'all' # none, ddl, mod, all
For more information on Logging queries see PostgreSql Log.
You can see in pg_log folder if the log configuration is enabled in postgresql.conf with this log directory name.
I found the log file at /usr/local/var/log/postgres.log on a mac installation from brew.
While using Django with postgres 10.6, logging was enabled by default, and I was able to simply do:
tail -f /var/log/postgresql/*
Ubuntu 18.04, django 2+, python3+
Source: Stackoverflow.com