interval.out

来自「PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统」· OUT 代码 · 共 67 行

-- interval check
CREATE TABLE intervaltmp (a interval);
\copy intervaltmp from 'data/interval.data'
SET enable_seqscan=on;
SELECT count(*) FROM intervaltmp WHERE a <  '199 days 21:21:23';
 count 
-------
   329
(1 row)

SELECT count(*) FROM intervaltmp WHERE a <= '199 days 21:21:23';
 count 
-------
   330
(1 row)

SELECT count(*) FROM intervaltmp WHERE a  = '199 days 21:21:23';
 count 
-------
     1
(1 row)

SELECT count(*) FROM intervaltmp WHERE a >= '199 days 21:21:23';
 count 
-------
   271
(1 row)

SELECT count(*) FROM intervaltmp WHERE a >  '199 days 21:21:23';
 count 
-------
   270
(1 row)

CREATE INDEX intervalidx ON intervaltmp USING gist ( a );
SET enable_seqscan=off;
SELECT count(*) FROM intervaltmp WHERE a <  '199 days 21:21:23'::interval;
 count 
-------
   329
(1 row)

SELECT count(*) FROM intervaltmp WHERE a <= '199 days 21:21:23'::interval;
 count 
-------
   330
(1 row)

SELECT count(*) FROM intervaltmp WHERE a  = '199 days 21:21:23'::interval;
 count 
-------
     1
(1 row)

SELECT count(*) FROM intervaltmp WHERE a >= '199 days 21:21:23'::interval;
 count 
-------
   271
(1 row)

SELECT count(*) FROM intervaltmp WHERE a >  '199 days 21:21:23'::interval;
 count 
-------
   270
(1 row)