導讀:1建站知識多字段查詢 復制代碼 代碼如下: mysql select id,name,birth from student; 所有字段查詢 復制代碼 代碼如下: mysq網站建設多少錢網站seo優化課程。

多字段查詢 復制代碼 代碼如下:     mysql> select id,name,birth from student;       所有字段查詢 復制代碼 代碼如下:     mysql> select * from student;       where指定查詢 復制代碼 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='計算機系';       in指定集合查詢 復制代碼 代碼如下:     mysql> select * from student where birth in(1988,1990); mysql> select * from student where id in(903,906);     not in非范圍查詢 復制代碼 代碼如下:     mysql> select * from student where birth not in(1990,1998);       between and指定范圍查詢 復制代碼 代碼如下:     mysql> select * from student where birth between 1986 and 1988;       not between and不在指定范圍的查詢 復制代碼 代碼如下:     mysql> select * from student where id not between 904 and 906;       like字符串匹配查詢 復制代碼 代碼如下:     mysql> select * from student where name like '_三'; mysq網站建設l> select * from student where name like '張三'; mysql> select * from student where name like '張%';       not like不匹配查詢 復制代碼 代碼如下:     mysql> select * from student where name not like '張%';       null查詢 復制代碼 代碼如下:     mysql> select * from student where address is null;       and多條件查詢 復制代碼 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 復制代碼 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查詢結果不重復   復制代碼 代碼如下:     mysql> select distinct sex from student; mysql> select distinct department from student;       order by查詢結果排序 復制代碼 代碼如下:     mysql網站seo優化診斷工具> 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 復制代碼 代碼如下:     mysql> select sex,group_concat(name) from student group by sex; mysql> select sex,count(name) from stud網站seo優化培訓ent group by sex;       正則表達式查詢 復制代碼 代碼如下:     mysql> select * from student where birth regexp '1988|1990';       limit限制查詢結果數量 復制代碼 代碼如下:     mysql> select * from student limit 2; mysql> select * from student limit 1,3;相關網站建設多少錢網站seo優化課程。

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