postgres 14 index

CREATE INDEX test1_id_index ON test1 (id);

CREATE INDEX test2_info_nulls_low ON test2 (info NULLS FIRST);
CREATE INDEX test3_desc_index ON test3 (id DESC NULLS LAST);

CREATE INDEX test1_lower_col1_idx ON test1 (lower(col1));

CREATE INDEX people_names ON people ((first_name || ' ' || last_name));

CREATE INDEX access_log_client_ip_ix ON access_log (client_ip)
WHERE NOT (client_ip > inet '192.168.100.0' AND
           client_ip < inet '192.168.100.255');

https://www.postgresql.org/docs/current/indexes-types.html