日期:2014-05-17 浏览次数:20595 次
create table t1(item varchar(15))
insert t1 select '111'
insert t1 select '222'
insert t1 select '333'
insert t1 select '444'
insert t1 select '555'
insert t1 select '666'
insert t1 select '777'
insert t1 select '888'
insert t1 select '999'
select * from t1
create table t2(c1 varchar(15),c2 varchar(15))
insert t2 select '111','222'
insert t2 select '333','666'
select * from t2
-- 查出t1中满足t2条件的记录,
-- 即(item>'111' and item<='222') or (item>'333' and item<='666')
-- 注:t2表中的范围记录数是不确定的,每条记录都是一小一大组成一个限制范围
drop table t1
drop table t2
create table t1(item varchar(15))
insert t1 select '111'
insert t1 select '222'
insert t1 select '333'
insert t1 select '444'
insert t1 select '555'
insert t1 select '666'
insert t1 select '777'
insert t1 select '888'
insert t1 select '999'
select * from t1
create table t2(c1 varchar(15),c2 varchar(15))
insert t2 select '111','222'
insert t2 select '333','666'
select * from t2
select * from t1 a,t2 b where a.item between b.c1 and b.c2
/*
item c1 c2
--------------- --------------- ---------------
111 111 222
222 111 222
333 333 666
444 333 666
555 333 666
666 333 666
(6 行受影响)
*/