MySQL常见查询案例与分析
案例1:
学生表如下:现要求查询1.统计学生同名,2.含有宝字的个数,3.同名最多的降序展示,4.展示前两个
原始数据:
select * from test1 ;
查询得到:
SELECT COUNT(name) as nameno,name FROM test1 WHERE name like '%宝%' GROUP BY name ORDER BY COUNT(name) DESC LIMIT 0,2;
学生表如下:现要求查询1.统计学生同名,2.含有宝字的个数,3.同名最多的降序展示,4.展示前两个
原始数据:
select * from test1 ;
查询得到:
SELECT COUNT(name) as nameno,name FROM test1 WHERE name like '%宝%' GROUP BY name ORDER BY COUNT(name) DESC LIMIT 0,2;