代码如下:
select name from stu where name not in(
select name from stu where
fenshu<=80 group by name having
count(*)>=1) group by name
先查到任何一门不足80的学生,再排除这些学生。
select name from stu group by name having min(fs)>=80。
还有这些简单语句。
简单基本的sql语句
更新:update table1 set field1=value1 where 范围
查找:select * from table1 where field1 like ’%value1%’ (所有包含‘value1’这个模式的字符串)
排序:select * from table1 order by field1,field2 [desc]
求和:select sum(field1) as sumvalue from table1
平均:select avg(field1) as avgvalue from table1
最大:select max(field1) as maxvalue from table1
最小:select min(field1) as minvalue from table1[separator]
select name from student where stu_id not in(select distinct stu_id from score where grade < 80)
select * from 数据表 where 字段>80;