mysql - 提取日期范围之间的点击次数

Question

我想从bannerstatclick表中有这些列（idBannerStats：整数，时间：时间戳，idCampaignBanner：char（36））的表格bannerstatclick中提取总点击时间（如按周或按月）。我想将最大时间计算为当前日期，然后在 30 天日期之前计算，然后找到此日期范围之间的点击次数，它不会返回任何输出...

   SELECT count(idCampaignBanner) AS TotalClicks 
   FROM newradium.BannerStatsClick 
   WHERE Time BETWEEN   
   (Select max(`Time`) FROM newradium.BannerStatsClick)
  And
   (select max(`Time`)- INTERVAL 30 DAY FROM newradium.BannerStatsClick);

Answer 1

试试这个

set @max_time:= (SELECT  max(`Time`) FROM newradium.BannerStatsClick );

SELECT count(idCampaignBanner) AS TotalClicks 
   FROM newradium.BannerStatsClick 
   WHERE Time BETWEEN date_add(@max_time, INTERVAL 30 DAY) and @max_time;

Answer 2

set @max_time:= (SELECT  max(`Time`) FROM newradium.BannerStatsClick );

SELECT count(idCampaignBanner) AS TotalClicks 
   FROM newradium.BannerStatsClick 
   WHERE Time BETWEEN  dateadd(day,-30,@max_time) and @max_time