-- 语法：
SELECT select_list
FROM table_name
[ WHERE search_condition ]
[ GROUP BY group_by_expression ]
[ HAVING search_condition ]
[ ORDER BY order_expression [ ASC | DESC ] ]
[limit m,n]
-- 示例：
-- limit 0,10是从第一条开始,取10条数据
select classNo from table_name
group by classNo
having(avg(成绩)>70)
order by classNo
limit 0,10
转载于:https://www.cnblogs.com/yuan9580/p/10292361.html
