int2.sql

PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统

-- int2 check

CREATE TABLE int2tmp (a int2);

\copy int2tmp from 'data/int2.data'

SET enable_seqscan=on;

SELECT count(*) FROM int2tmp WHERE a <  237;

SELECT count(*) FROM int2tmp WHERE a <= 237;

SELECT count(*) FROM int2tmp WHERE a  = 237;

SELECT count(*) FROM int2tmp WHERE a >= 237;

SELECT count(*) FROM int2tmp WHERE a >  237;

CREATE INDEX int2idx ON int2tmp USING gist ( a );

SET enable_seqscan=off;

SELECT count(*) FROM int2tmp WHERE a <  237::int2;

SELECT count(*) FROM int2tmp WHERE a <= 237::int2;

SELECT count(*) FROM int2tmp WHERE a  = 237::int2;

SELECT count(*) FROM int2tmp WHERE a >= 237::int2;

SELECT count(*) FROM int2tmp WHERE a >  237::int2;