-- uuid check
CREATE TABLE uuidtmp (a uuid);
\copy uuidtmp from 'data/uuid.data'
SET enable_seqscan=on;
SELECT count(*) FROM uuidtmp WHERE a <  '55e65ca2-4136-4a4b-ba78-cd3fe4678203';
 count 
-------
   227
(1 row)

SELECT count(*) FROM uuidtmp WHERE a <= '55e65ca2-4136-4a4b-ba78-cd3fe4678203';
 count 
-------
   228
(1 row)

SELECT count(*) FROM uuidtmp WHERE a  = '55e65ca2-4136-4a4b-ba78-cd3fe4678203';
 count 
-------
     1
(1 row)

SELECT count(*) FROM uuidtmp WHERE a >= '55e65ca2-4136-4a4b-ba78-cd3fe4678203';
 count 
-------
   376
(1 row)

SELECT count(*) FROM uuidtmp WHERE a >  '55e65ca2-4136-4a4b-ba78-cd3fe4678203';
 count 
-------
   375
(1 row)

SET client_min_messages = DEBUG1;
CREATE INDEX uuididx ON uuidtmp USING gist ( a );
DEBUG:  building index "uuididx" on table "uuidtmp" serially
DEBUG:  using sorted GiST build
CREATE INDEX uuididx_b ON uuidtmp USING gist ( a ) WITH (buffering=on);
DEBUG:  building index "uuididx_b" on table "uuidtmp" serially
DROP INDEX uuididx_b;
RESET client_min_messages;
SET enable_seqscan=off;
SELECT count(*) FROM uuidtmp WHERE a <  '55e65ca2-4136-4a4b-ba78-cd3fe4678203'::uuid;
 count 
-------
   227
(1 row)

SELECT count(*) FROM uuidtmp WHERE a <= '55e65ca2-4136-4a4b-ba78-cd3fe4678203'::uuid;
 count 
-------
   228
(1 row)

SELECT count(*) FROM uuidtmp WHERE a  = '55e65ca2-4136-4a4b-ba78-cd3fe4678203'::uuid;
 count 
-------
     1
(1 row)

SELECT count(*) FROM uuidtmp WHERE a >= '55e65ca2-4136-4a4b-ba78-cd3fe4678203'::uuid;
 count 
-------
   376
(1 row)

SELECT count(*) FROM uuidtmp WHERE a >  '55e65ca2-4136-4a4b-ba78-cd3fe4678203'::uuid;
 count 
-------
   375
(1 row)