I am using PostgreSQL 14. I have finally managed to build the timescaledb-toolkit for it (based on the alpine docker image) and now I get the control file, the library, everything. So, I execute
CREATE EXTENSION timescaledb_toolkit;
and there is no error, but the moment I try to use any function defined on the extension I get
db=# SELECT time_bucket('5m'::interval, time) AS five_min, delta(counter_agg(time, energy_t1_in)) AS net_in FROM electricity GROUP BY five_min;
ERROR: function counter_agg(timestamp without time zone, numeric) does not exist
LINE 1: ...e_bucket('5m'::interval, time) AS five_min, delta(counter_ag...
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
Following this answer I can see that no methods are listed for the extension, which makes me think that somehow the extension is installed but not really "registered" (?). How can I fix this?