数据库__Sqlserver__基础应用及了解

select * from heros;



insert into heros values(1, ‘宋江‘, ‘及时雨‘, ‘男‘, ‘80000‘);
insert into heros values(2, ‘卢俊义‘, ‘玉麒麟‘, ‘男‘, ‘50000‘);
insert into heros values(3, ‘吴用‘, ‘智多星‘, ‘男‘, ‘40000‘);
insert into heros values(4, ‘公孙胜‘, ‘入云龙‘, ‘男‘, ‘30000‘);
insert into heros values(5, ‘黄三婆‘, ‘母老虎‘, ‘女‘, ‘30000‘);


delete from heros where sex= ‘女‘;

update heros set salary=salary*1.5 where salary<50000;

select * from heros where salary<50000;