cidr.out

PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统

-- 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)

CREATE INDEX cidridx ON cidrtmp USING gist ( a );
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)