-- inet check
CREATE TABLE inettmp (a inet);
\copy inettmp from 'data/inet.data'
SET enable_seqscan=on;
SELECT count(*) FROM inettmp WHERE a <  '89.225.196.191';
 count 
-------
   213
(1 row)

SELECT count(*) FROM inettmp WHERE a <= '89.225.196.191';
 count 
-------
   214
(1 row)

SELECT count(*) FROM inettmp WHERE a  = '89.225.196.191';
 count 
-------
     1
(1 row)

SELECT count(*) FROM inettmp WHERE a >= '89.225.196.191';
 count 
-------
   387
(1 row)

SELECT count(*) FROM inettmp WHERE a >  '89.225.196.191';
 count 
-------
   386
(1 row)

CREATE INDEX inetidx ON inettmp USING gist ( a );
SET enable_seqscan=off;
SELECT count(*) FROM inettmp WHERE a <  '89.225.196.191'::inet;
 count 
-------
   213
(1 row)

SELECT count(*) FROM inettmp WHERE a <= '89.225.196.191'::inet;
 count 
-------
   214
(1 row)

SELECT count(*) FROM inettmp WHERE a  = '89.225.196.191'::inet;
 count 
-------
     1
(1 row)

SELECT count(*) FROM inettmp WHERE a >= '89.225.196.191'::inet;
 count 
-------
   387
(1 row)

SELECT count(*) FROM inettmp WHERE a >  '89.225.196.191'::inet;
 count 
-------
   386
(1 row)

VACUUM ANALYZE inettmp;
-- gist_inet_ops lacks a fetch function, so this should not be index-only scan
EXPLAIN (COSTS OFF)
SELECT count(*) FROM inettmp WHERE a  = '89.225.196.191'::inet;
                    QUERY PLAN                    
--------------------------------------------------
 Aggregate
   ->  Index Scan using inetidx on inettmp
         Index Cond: (a = '89.225.196.191'::inet)
(3 rows)

SELECT count(*) FROM inettmp WHERE a  = '89.225.196.191'::inet;
 count 
-------
     1
(1 row)

DROP INDEX inetidx;
CREATE INDEX ON inettmp USING gist (a gist_inet_ops, a inet_ops);
-- this can be an index-only scan, as long as the planner uses the right column
EXPLAIN (COSTS OFF)
SELECT count(*) FROM inettmp WHERE a  = '89.225.196.191'::inet;
                       QUERY PLAN                        
---------------------------------------------------------
 Aggregate
   ->  Index Only Scan using inettmp_a_a1_idx on inettmp
         Index Cond: (a = '89.225.196.191'::inet)
(3 rows)

SELECT count(*) FROM inettmp WHERE a  = '89.225.196.191'::inet;
 count 
-------
     1
(1 row)