根据另一个表限定的范围查找记录，有实例。
本帖最后由 i2428183811 于 2012-12-07 16:40:47 编辑

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)


*/