我有一张这样的桌子
CREATE TABLE news ( Id INT NOT NULL auto_increment,Headline VARCHAR (255) NULL,InDateTime DATETIME NULL )@H_403_8@如何获取每秒记录数(InDateTime)？
我正在使用MysqL
样本记录：
578921,'headline1','8/20/2012 12:01:53 PM' 578922,'headline2','8/20/2012 12:01:53 PM' 578923,'headline3','8/20/2012 12:01:53 PM' 578924,'headline4','8/20/2012 12:01:59 PM' 578925,'headline5','8/20/2012 12:01:59 PM' 578926,'headline6','8/20/2012 12:01:59 PM' 578927,'headline7','8/20/2012 12:01:59 PM' 578928,'headline8','8/20/2012 12:02:03 PM'@H_403_8@预期产量：
time,count '8/20/2012 12:01:53 PM',3 '8/20/2012 12:01:59 PM',4 '8/20/2012 12:02:03 PM',1@H_403_8@
最佳答案
你累了吗：
SELECT COUNT(id),InDateTime
FROM news
GROUP BY InDateTime
@H_403_8@