1、测试表创建,插入数据:
create table a (id int, name varchar2(10)); create table b (id int); insert into a values (1,'a'); insert into a values (2,'b'); insert into a values (3,'c'); insert into a values (4,'d'); insert into a values (5,'e'); insert into b values (1); insert into b values (3);
2、查询b表中存在的id不出现在a表中的内容,可用语句:
select * from a where id not in (select id from b);
3、结果:
demo
查询泊位表中地磁编号在地磁表中没有的
SELECT P.GEIMAGNETIC_ID FROM PARK P WHERE P.GEIMAGNETIC_ID NOT IN (SELECT EQUIP_ID FROM GEIMAGNETIC G) select equip_id,PARKLOTS,PARK_ID from GEIMAGNETIC where equip_id not in (select GEIMAGNETIC_ID from park p);