使用查询在datetime大于当前日期时检索总记录ID

Question

如果每个月使用myquery，我想检索datetime小于当前日期的总记录ID。但是我无法检索它。我没有得到任何输出。日期结构是类似于＆的日期时间＃39; 2016-2-17 23：20：22＆＃39;。那么，我该怎么做？

 SELECT  DATE_FORMAT('regist_timestamp','%Y-%m-%d') AS date, count(id) as numberOfVisits from  ash_members
where DATE_FORMAT('regist_timestamp','%Y-%m-%d')<=curdate()

Answer 1

您需要对计数结果进行分组。如果您想要每月分组结果，您可以这样做。

SELECT MONTH(regist_timestamp) AS Month, YEAR(regist_timestamp) AS Year, count(id) AS numberOfVisits
FROM ash_members
WHERE DATE(regist_timestamp) < CURDATE()
GROUP BY MONTH(regist_timestamp), YEAR(regist_timestamp)