MySQL筆記之基本查詢的應用詳解

參考表：student

多欄位查詢

複製代碼 代碼如下:mysql> select id,name,birth from student;

所有欄位查詢
複製代碼 代碼如下:mysql> select * from student;

where指定查詢
複製代碼 代碼如下:mysql> select * from student where id=901;
mysql> select * from student where id>=904;
mysql> select name from student where department='電腦系';

in指定集合查詢
複製代碼 代碼如下:mysql> select * from student where birth in(1988,1990);
mysql> select * from student where id in(903,906);

not in非範圍查詢
複製代碼 代碼如下:mysql> select * from student where birth not in(1990,1998);

between and指定範圍查詢
複製代碼 代碼如下:mysql> select * from student where birth between 1986 and 1988;

not between and不在指定範圍的查詢
複製代碼 代碼如下:mysql> select * from student where id not between 904 and 906;

like字串匹配查詢
複製代碼 代碼如下:mysql> select * from student where name like '_三';
mysql> select * from student where name like '張三';
mysql> select * from student where name like '張%';

not like不匹配查詢
複製代碼 代碼如下:mysql> select * from student where name not like '張%';

null查詢
複製代碼 代碼如下:mysql> select * from student where address is null;

and多條件查詢
複製代碼 代碼如下:mysql> select * from student where name like '張%' and birth>1985;
mysql> select * from student where name like '張%' and birth>1985 and id like '%3';

or多條件查詢
複製代碼 代碼如下:mysql> select * from student where id=905 or birth=1988;
mysql> select * from student where id=905 or birth=1988 or sex='女';

distinct查詢結果不重複

複製代碼 代碼如下:mysql> select distinct sex from student;
mysql> select distinct department from student;

order by查詢結果排序
複製代碼 代碼如下: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分組查詢
複製代碼 代碼如下:mysql> select sex,group_concat(name) from student group by sex;
mysql> select sex,count(name) from student group by sex;

Regex查詢
複製代碼 代碼如下:mysql> select * from student where birth regexp '1988|1990';

limit限制查詢結果數量
複製代碼 代碼如下:mysql> select * from student limit 2;
mysql> select * from student limit 1,3;