多欄位查詢
複製** **如下:
mysql> select id,name,birth from student;
所有字段查詢
複製** **如下:
mysql> select * from student;
where指定查詢
複製** **如下:
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
複製** **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** **如下:
mysql> select * from student where birth not in(1990,1998);
between and指定範圍查詢
複製** **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** 代程式設計客棧碼如下:
mysql> select * from student where id not between 904 and 906;
like字串匹配查詢
複製** **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** **如下:
mysql> select * from student where name not like '張%';
null查詢
複製** **如下:
mysqlwww.cppcns.com> select * from student where address is null;
and多條件查詢
複製** **如下:
mysql> select * from student where name like '張%' and birth>1985;
mysql> selegttrsysuict * from student where name like '張%' and birth>1985 and id like '%3';
or多條件查詢
複製** **如下:
mysql> se程式設計客棧lect * from student where id=905 or birth=1988;
mysql> select * from student where id=905 or birth=1988 or ***='女';
distinct查詢結果不重複
複製** **如下:
mysql> select distinct *** from student;
mysql> select distinct department from student;
order by查詢結果排序
複製** **如下:
mysql> select * from student order by birth;
mysql>trsysuigt; select * from student order by birth asc;
mysql> select * from student order by birth desc;
group by分組查詢
複製** **如下:
mysql> select ***,group_concat(name) from student group by ***;
mysql> select ***,count(name) from student group by ***;
正規表示式查詢
複製** **如下:
mysql> select * from student where birth regexp '1988|1990';
limit限制查詢結果數量
複製** **如下:
mysql> select * from student limit 2;
mysql> select * from student limit 1,3;
本文標題: mysql筆記之基本查詢的應用詳解
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