字段进行按天按月按年分组统计查询根据数据库

今天在数据库取数的据数据库进行时候发现MySQL中的时间字段是一串数字，然后返回的字段JSON数据中也是一串数字，这对后期做数据分析和数据可视化来说很不友好。按天按月按年由于不懂怎么处理，分组然后就开始询问度娘。统计终于功夫不负有心人，查询在经历了九九八十一次失败后，据数据库进行终于找到了解决方法。字段下面简单记录一下，按天按月按年用作源码库个人收藏备用。分组MySQL根据数据库字段进行按天、统计按月、查询按年分组统计查询函数代码：1、据数据库进行如果时间字段类型为date或datetime：//按周查询 SELECT DATE_FORMAT(create_time,字段%Y%u) weeks,COUNT(id) COUNT FROM role GROUP BY weeks; //按天查询 SELECT DATE_FORMAT(create_time,%Y%m%d) days,COUNT(id) COUNT FROM role GROUP BY days; //按月查询 SELECT DATE_FORMAT(create_time,%Y%m) months,COUNT(id) COUNT FROM role GROUP BY months //按周查询 SELECT DATE_FORMAT(create_time,%Y%u) weeks,COUNT(id) COUNT FROM role GROUP BY weeks; //按天查询 SELECT DATE_FORMAT(create_time,%Y%m%d) days,COUNT(id) COUNT FROM role GROUP BY days; //按月查询 SELECT DATE_FORMAT(create_time,%Y%m) months,COUNT(id) COUNT FROM role GROUP BY months //按周查询 SELECT DATE_FORMAT(create_time,%Y%u) weeks,COUNT(id) COUNT FROM role GROUP BY weeks; //按天查询 SELECT DATE_FORMAT(create_time,%Y%m%d) days,COUNT(id) COUNT FROM role GROUP BY days; //按月查询 SELECT DATE_FORMAT(create_time,%Y%m) months,COUNT(id) COUNT FROM role GROUP BY months 2、如果时间字段为时间戳（timestamp）或int表示的按天按月按年时间戳：//按周查询 SELECT FROM_UNIXTIME(create_time,%Y%u) weeks,COUNT(id) COUNT FROM role GROUP BY weeks; //按天查询 SELECT FROM_UNIXTIME(create_time,%Y%m%d) days,COUNT(id) COUNT FROM role GROUP BY days; //按月查询 SELECT FROM_UNIXTIME(create_time,%Y%m) months,COUNT(id) COUNT FROM role GROUP BY months //按周查询 SELECT FROM_UNIXTIME(create_time,%Y%u) weeks,COUNT(id) COUNT FROM role GROUP BY weeks; //按天查询 SELECT FROM_UNIXTIME(create_time,%Y%m%d) days,COUNT(id) COUNT FROM role GROUP BY days; //按月查询 SELECT FROM_UNIXTIME(create_time,%Y%m) months,COUNT(id) COUNT FROM role GROUP BY months //按周查询 SELECT FROM_UNIXTIME(create_time,%Y%u) weeks,COUNT(id) COUNT FROM role GROUP BY weeks; //按天查询 SELECT FROM_UNIXTIME(create_time,%Y%m%d) days,COUNT(id) COUNT FROM role GROUP BY days; //按月查询 SELECT FROM_UNIXTIME(create_time,%Y%m) months,COUNT(id) COUNT FROM role GROUP BY months 备注：里面的日期和时间格式可以根据自己的需求调整为：%Y%u   %Y-%m-%d %H:00:00   %Y-%m-%d   %Y/%m/%d内容看完了 © 版权声明 1:本网站名称：蜡笔傻新2:本站永久网址：https://labishaxin.com/3:本站部分内容收集于互联网，如果有侵权内容、请联系我们删除，不妥之处，敬请谅解4:本站一切资源不代表本站立场，并不代表本站赞同其观点和对其真实性负责5:本站一律禁止以任何方式发布或转载任何违法的相关信息，访客发现请向站长举报6:本站资源大多存储在云盘，如发现链接失效，请联系我们我们会第一时间更新。