select county, count(county) as total_entry from house
group by county;
我得到了
county | total_entry
'county1'| '1'
'county2'| '11'
'county3'| '2'
现在我想得到以下结果:
county | ad_type | total_entries
'county1'| SALE | '1'
'county2'| SALE | '4'
'county2'| RENT | '5'
'county2'| NEWHOUSING | '2'
'county3'| RENT | '2'
我如何实现这一目标? (ad_type是house表中的字段)。
答案 0 :(得分:3)
尝试这样的事情:(我假设您的总数已关闭,因为您也希望按ad_type分组)
SELECT county, COUNT(county) AS counties, ad_type FROM house
GROUP BY county, ad_type