May 2019
Intermediate to advanced
600 pages
20h 46m
English
book
PostgreSQL 11 Administration Cookbook
by Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala, Sheldon Strauch
Content preview from PostgreSQL 11 Administration Cookbook
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How to do it…
The \watch meta-command allows psql users to automatically (and continuously) re-execute a query.
This behavior is similar to the watch utility of some Linux and Unix environments.
In the following example, we will run a simple query on pg_stat_activity and ask psql to repeat it every 5 seconds. You can exit at any time by pressing Ctrl + C:
gabriele=> SELECT count(*) FROM pg_stat_activity; count------- 1(1 row)gabriele=> \watch 5Watch every 5s Tue Aug 27 21:47:24 2013 count------- 1(1 row)<snip>
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