mysql查询不重复的行内容,不重复的记录数count,distinct_MySQL
- WBOYOriginal
- 2016-06-01 13:40:501230browse
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mysql查询不重复的行内容,不重复的记录数count,distinct 有这么一个表 记录了id, p_id, p_name , p_content , p_time 1 343 aaa aaaaaa 2012-09-01 2 344 bbb bbbbbb 2012-09-02 3 321 ccc cccccccc 2012-09-03 4 343 aaa aaaaaa 2012-09-04 想查询不重复的行的内容,并且输出 p_sum ( 产品p_id出现重复的次数) select *, count(*) as p_sum from p_table_name group by p_name; 查询不重复的行的总行数(好写翻页) select count(distinct p_id) as num from p_table_name;
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