MySQL笔记之基本查询的应用详解

多字段查询复制代码 代码如下:mysql> select id,name,birth from student;所有字段查询复制代码 代码如下:mysql> select * from student;where指定查询复制代码 代码如下:mysql> select * from student where id=901;mysql> select * from student where id>=904;mysql> select name from student where department='计算机系';in指定集合查询复制代码 代码如下:mysql> select * from student where birth in(1988,1990);mysql> select * from student where id in(903,906);not in非范围查询复制代码 代码如下:mysql> select * from student where birth not in(1990,1998);between and指定范围查询复制代码 代码如下:mysql> select * from student where birth between 1986 and 1988;not between and不在指定范围的查询复制代码 代码如下:mysql> select * from student where id not between 904 and 906;like字符串匹配查询复制代码 代码如下:mysql> select * from student where name like '_三';mysql> select * from student where name like '张三';mysql> select * from student where name like '张%';not like不匹配查询复制代码 代码如下:mysql> select * from student where name not like '张%';null查询复制代码 代码如下:mysql> select * from student where address is null;and多条件查询复制代码 代码如下:mysql> select * from student where name like '张%' and birth>1985;mysql> select * from student where name like '张%' and birth>1985 and id like '%3';or多条件查询复制代码 代码如下:mysql> select * from student where id=905 or birth=1988;mysql> select * from student where id=905 or birth=1988 or sex='女';distinct查询结果不重复复制代码 代码如下:mysql> select distinct sex from student;mysql> select distinct department from student;order by查询结果排序复制代码 代码如下:mysql> select * from student order by birth;mysql> select * from student order by birth asc;mysql> select * from student order by birth desc;group by分组查询复制代码 代码如下:mysql> select sex,group_concat(name) from student group by sex;mysql> select sex,count(name) from student group by sex;正则表达式查询复制代码 代码如下:mysql> select * from student where birth regexp '1988|1990';limit限制查询结果数量复制代码 代码如下:mysql> select * from student limit 2;mysql> select * from student limit 1,3;