Culture Insider: Teacher's Day in ancient China 2016-09-10 CHINADAILY Today is the 32nd Chinese Teacher's Day – a festival celebrating the 2,300-year tradition of respecting teachers and education in China. It's similar to the birthday of Confucius o
SELECT COUNT(*) AS 多少组数FROM( SELECT id FROM 表 GROUP BY id) subQuery;Mysql,有一个表含有以下字段,uid 发帖人id,title 发帖标题,tc 发帖内容,time 发帖时间,用一条语句算出昨天发帖书大于10的,一共有多少人? select count(*) from (select distinct startperson_id,count(startperson_id) as num from apphome_finan