在层次查询中,Oracle引入了一个伪列level,用来表示当前行(节点)对应的level, 它从1开始计数,每多一层level的值就加1. 我们可以据此实现对两个日期/整数之间所有日期/整数的遍历. ---------------------------------------------------------- SQL> create table test (begin_date date,end_date date); Table created SQL> insert into te
declare @start datetime declare @end datetime set @start = '2018-01-25' set @end = '2018-02-03' select dateadd(dd,num,@start) FROM (SELECT ROW_NUMBER() OVER (ORDER BY ID)-1 AS num FROM sysobjects) KK where dateadd(dd,num,@start) <=@end --2018-01-25 0
目录:[Swift]Xcode实际操作 本文将演示如何计算两个日期之间的差值. 在项目导航区,打开视图控制器的代码文件[ViewController.swift] import UIKit class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically fro
var stime = '2018-07-25'; //开始日期 var etime = '2018-08-02'; //结束日期 getdiffdate(stime,etime); //获取两日期之间日期列表函数 function getdiffdate(stime,etime){ //初始化日期列表,数组 var diffdate = new Array(); var i=0; //开始日期小于等于结束日期,并循环 while(stime<=etime){ diffdate[i] = sti
SQL取出 所有周六 周日的日期 create table SatSun([id] int identity(1,1),[date] datetime,[weekday] char(6)) go declare @datetime datetime,@weekday char(6) set @datetime='2007-1-1' while @datetime<='2007-12-31' begin select @weekday=datename(weekday,@datetime) if