mysql數據庫表的查詢，參考表：student，包括id,name,sex,birth,department,address等幾個字段，存在著一些數據，對這些數據進行相關的查詢

多字段查詢

mysql> select id,name,birth from student;

所有字段查詢

mysql> select * from student;

where指定查詢

mysql> select * from student where id=901;

mysql> select * from student where id>=904;

mysql> select name from student where department='計算機系';

in指定集合查詢

mysql> select * from student where birth in(1988,1990);

mysql> select * from student where id in(903,906);

not in非范圍查詢

mysql> select * from student where birth not in(1990,1998);

between and指定范圍查詢

mysql> select * from student where birth between 1986 and 1988;

not between and不在指定范圍的查詢

mysql> select * from student where id not between 904 and 906;

like字符串匹配查詢

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

mysql> select * from student where name not like '張%';

null查詢

mysql> select * from student where address is null;

and多條件查詢

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

mysql> select * from student where id=905 or birth=1988;

mysql> select * from student where id=905 or birth=1988 or sex='女';

distinct查詢結果不重復

mysql> select distinct sex from student;

mysql> select distinct department from student;

order by查詢結果排序

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

mysql> select sex,group_concat(name) from student group by sex;

mysql> select sex,count(name) from student group by sex;

正則表達式查詢

mysql> select * from student where birth regexp '1988|1990';

limit限制查詢結果數量

mysql> select * from student limit 2;

mysql> select * from student limit 1,3;