--根据日期查询星期SELECT SYSDATETIME();select datepart(weekday,getdate()); SET DATEFIRST 1select '星期'+case when cast(datepart(dw,getdate()) as char(1))= 7 then '天' else cast(datepart(dw,getdate()) as char(1)) end select @@datefirst; datefirst 一般美国采用星期天作为一周的第
一.按日期分组 String paramString = "select strftime('%Y-%m-%d',"+DBConfig.RUNNING_LOG_DATE+") as "+FORMAT_DATE+" from " +DBConfig.TABLE_RUNNING_LOG+" group by strftime('%Y-%m-%d',"+DBConfig.RUNNING_LOG_DATE+") order
1,对一天24小时内每小时的数据量求和: SELECT IFNULL(SUM(CASE HOUR(时间字段) WHEN 0 THEN 1 ELSE 0 END),0)as '0', IFNULL(SUM(CASE HOUR(时间字段) WHEN 1 THEN 1 ELSE 0 END),0)as '1', IFNULL(SUM(CASE HOUR(时间字段) WHEN 2 THEN 1 ELSE 0 END),0) AS '2', IFNULL(SUM(CASE HOUR(时间字段) WHEN
Java web项目开发,ORM层用的是Hibernate,用HQL语句查询不同数据库时,日期时间比较还是有所区别的. 1.在Mysql数据库时,是这样写的: 上面是个代码拼串截图,翻译一下是这样的: from MyObj where t.addTime >='2016-06-01' and t.addTime <= '2016-06-10 23:59:59' 2.在Oracle数据库中,是这样写的: 翻译一下: from MyObj where t.addTime >= to_date
在mysql中,比如你的表的时间字段是column2,并且column2的类型是timestamp 单日查询: select * from TableName where column1='xxxx' and date(column2)='2015-05-29' 日期范围查询: select * from TableName where column1='xxxx' and date(column2) between '2015-02-03' and '2015-06-03'