-- cidr check
CREATE TABLE cidrtmp AS
  SELECT cidr(a) AS a FROM inettmp ;
SET enable_seqscan=on;
SELECT count(*) FROM cidrtmp WHERE a <  '121.111.63.82';
 count 
-------
   290
(1 row)

SELECT count(*) FROM cidrtmp WHERE a <= '121.111.63.82';
 count 
-------
   291
(1 row)

SELECT count(*) FROM cidrtmp WHERE a  = '121.111.63.82';
 count 
-------
     1
(1 row)

SELECT count(*) FROM cidrtmp WHERE a >= '121.111.63.82';
 count 
-------
   310
(1 row)

SELECT count(*) FROM cidrtmp WHERE a >  '121.111.63.82';
 count 
-------
   309
(1 row)

SET client_min_messages = DEBUG1;
CREATE INDEX cidridx ON cidrtmp USING gist ( a );
DEBUG:  building index "cidridx" on table "cidrtmp" serially
DEBUG:  using sorted GiST build
CREATE INDEX cidridx_b ON cidrtmp USING gist ( a ) WITH (buffering=on);
DEBUG:  building index "cidridx_b" on table "cidrtmp" serially
DROP INDEX cidridx_b;
RESET client_min_messages;
SET enable_seqscan=off;
SELECT count(*) FROM cidrtmp WHERE a <  '121.111.63.82'::cidr;
 count 
-------
   290
(1 row)

SELECT count(*) FROM cidrtmp WHERE a <= '121.111.63.82'::cidr;
 count 
-------
   291
(1 row)

SELECT count(*) FROM cidrtmp WHERE a  = '121.111.63.82'::cidr;
 count 
-------
     1
(1 row)

SELECT count(*) FROM cidrtmp WHERE a >= '121.111.63.82'::cidr;
 count 
-------
   310
(1 row)

SELECT count(*) FROM cidrtmp WHERE a >  '121.111.63.82'::cidr;
 count 
-------
   309
(1 row)