请教inner join 与一般笛卡尔积的区别,如select * from tb1 a inner join tb2 b on a.id=b.id 与select * from tb1 a ,tb2 b where a.id
来源:互联网
请教inner join 与一般笛卡尔积的区别,如select * from tb1 a inner join tb2 b on a.id=b.id 与select * from tb1 a ,tb2 b where a.id=b.id 有什么不同?谢谢!
请教inner join 与一般笛卡尔积的区别,如select * fro