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mysql查询数据库中出重复次数最多的记录

Jun 07, 2016 pm 05:51 PM
mysql database

文章利用了count(*)和broupby 及order by来实现了mysql查询数据库中出重复次数最多的记录并且 以最多降序列出。

 代码如下 复制代码
SELECT keyword, count( * ) AS count
FROM article_keyword
GROUP BY keyword
ORDER BY count DESC
LIMIT 20

此段查询语句返回 article_keyword 表中 keyword 重复次数(count) 最多的20条记录。

 代码如下 复制代码
SELECT DISTINCT count( * ) AS count
FROM article_keyword
GROUP BY keyword
ORDER BY count DESC
LIMIT 6

此段查询语句返回 article_keyword 表中 keyword 的重复次数(count) 排名前 6 的数值。通过添加 DISTINCT 返回唯一记录

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