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如何使用MySQL查询某个列中相同值的数量统计_MySQL

WBOY
Release： 2016-06-01 12:59:23
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数据现在是这样的，我想确定出type列中的news和image。。。。甚至以后有其他值，他们分别有多少个。

SELECT 
 type, 
 count(1) AS counts 
FROM 
 material 
GROUP BY 
 type
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count(1),代表统计第一列，写上1 比写 *的效率高！

以上所述就是本文的全部内容了，希望大家能够喜欢。

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