标签:blog gravity group mat ext style mysq font from
数据如今是这种,我想确定出type列中的news和image。。。。甚至以后有其它值,他们分别有多少个。
SELECT type, count(1) AS counts FROM material GROUP BY type
标签:blog gravity group mat ext style mysq font from
原文地址:http://www.cnblogs.com/brucemengbm/p/6801275.html