比较来自参数的两个日期的条件，如果满足则添加

Question

这是我的程序，我在程序中从到 date 我必须检查 FROM 和 TO 日期之间的差异是否大于 2

如果条件满足我必须添加 2days in from days 并将其设置为 TODATE

ALTER PROCEDURE [dbo].[sp_TU_AvgStdDev_Report] 
@FromDate as Datetime,
@ToDate as Datetime,
@RecipeCode as Varchar(8000),
@Grade as Varchar(10),
@WcID as Int
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
SET NOCOUNT ON;
IF (condition to check if @FromDate - @ToDate  > 2)
--if it satisfies
SET @ToDate to @fromDate+2Days

请帮我弄清楚...

Answer 1

使用DATEDIFF and DATEADD函数

IF DATEDIFF(D,@FromDate,@ToDate)  > 2
BEGIN  
  --if it satisfies
  SET @ToDate = DATEADD(D,2, @fromDate)
END

Answer 2

首先将日期中的时间部分转换为日期，如

 convert(date,convert(varchar,@FromDate))
 convert(date,convert(varchar,@ToDate))

那么你将只有日期，然后你可以使用 DATEDIFF sql 函数找出两个日期之间的差异

最终解决方案

IF DATEDIFF(day,convert(date,convert(varchar,@FromDate)),convert(date,convert(varchar,@ToDate)))  > 2
BEGIN  
  --if it satisfies
  SET @ToDate = DATEADD(day,2, convert(date,convert(varchar,@FromDate)))
END

Answer 3

你应该使用 DateDiff 使用以下查询可能对您有所帮助。

if( Datediff(day, Todate, FromDate) > 2)
// Your query

Answer 4

为此您需要使用日期函数。

ALTER PROCEDURE [dbo].[sp_TU_AvgStdDev_Report] 
@FromDate as Datetime,
@ToDate as Datetime,
@RecipeCode as Varchar(8000),
@Grade as Varchar(10),
@WcID as Int
AS
BEGIN
IF (datediff(day,@FromDate,@ToDate)>2)
SET @ToDate =  DATEADD(day,2, @fromDate)

比较来自参数的两个日期的条件，如果满足则添加

Condition to COMPARE TWO DATE From parameter and ADD if it Satisfies

sql-server

stored-procedures

procedure

sql-server-2008

sql-server-2012