create table tstztest( trange tstzrange ); postgres=# insert into tstztest select tstzrange(t, t + interval '1 month') from generate_series('2012-01-01'::timestamptz,'2018-01-01','1 month') as gs(t); INSERT 0 73 postgres=# analyze tstztest; ANALYZE postgres=# select * from pg_stats where tablename = 'tstztest'; schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram ------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------ +-------------+-------------------+------------------------+---------------------- public | tstztest | trange | f | 0 | 22 | -1 | | | | | | |
Now, there actually *is* a histogram for the column, which you can find via pg_statistic. But is shows up as NULL in pg_stats view. If this is a known issue, we ought to at least add it to the docs. -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers