Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

countdown - subtract date times

Posted on 2011-02-25
3
269 Views
Last Modified: 2012-05-11
this is a toughy...

so when ever the sproc runs on user submit...it takes the current date - whatever go_hour is set to...
-----------
if the user presses button at 9:30PM...and go_hour is '1:00 AM' then
@countdown = '2:30'

as it will be 2 and half hours till process runs as scheduled at 1:00AM...
-----------
if the user presses button at 11:45AM...and go_hour is '2:00 PM' then
@countdown = '2:15'

as it will be 2 hours and fifteen minutes till process runs as scheduled at  '2:00 PM' ...
-----------


--heres my code with errors.. : )

------------------
declare  @GO_HOUR  nvarchar(10)
Set @GO_HOUR  = '1:00 AM'

DECLARE @CURR_DATE smalldatetime
 SET  @CURR_DATE = ISNULL(@CURR_DATE, getDATE())

declare @countdown nvarchar(10)
set  @countdown  = @GO_HOUR - @CURR_DATE
0
Comment
Question by:GlobaLevel
  • 2
3 Comments
 
LVL 50

Accepted Solution

by:
Lowfatspread earned 500 total points
ID: 34982443
declare  @GO_HOUR  nvarchar(10)
Set @GO_HOUR  = '1:00 AM'

DECLARE @CURR_DATE smalldatetime
 SET  @CURR_DATE = ISNULL(@CURR_DATE, getDATE())

declare @countdown nvarchar(10)

Select  @countdown= right('00'+ convert(varchar(2), x.diff / 60),2)+':'+
                right('00'+convert(varchar(2),x.diff % 60),2)
  from (Select datediff(n,colaesce(@curr_date,getdate())) as Diff) as x
0
 
LVL 50

Expert Comment

by:Lowfatspread
ID: 34984218
declare  @GO_HOUR  nvarchar(10)
Set @GO_HOUR  = '1:00 AM'

DECLARE @CURR_DATE smalldatetime
 SET  @CURR_DATE = ISNULL(@CURR_DATE, getDATE())

declare @countdown nvarchar(10)

Select  @countdown= right('00'+ convert(varchar(2), x.diff / 60),2)+':'+
                right('00'+convert(varchar(2),x.diff % 60),2)
  from (Select datediff(n,coalesce(@curr_date,getdate())) as Diff) as x
0
 
LVL 58

Expert Comment

by:cyberkiwi
ID: 34986192
Just use date types

declare  @GO_HOUR  nvarchar(10)
Set @GO_HOUR  = '1:00 AM'

DECLARE @CURR_DATE smalldatetime
SET @CURR_DATE = ISNULL(@CURR_DATE, getDATE())

declare @countdown nvarchar(10)
set @countdown = convert(varchar(8),
    convert(datetime,@GO_HOUR)
   -
    dateadd(d,-datediff(d,0,@CURR_DATE),@CURR_DATE),8)

select @countdown

Open in new window

0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Naughty Me. While I was changing the database name from DB1 to DB_PROD1 (yep it's not real database name ^v^), I changed the database name and notified my application fellows that I did it. They turn on the application, and everything is working. A …
In this article I will describe the Copy Database Wizard method as one possible migration process and I will add the extra tasks needed for an upgrade when and where is applied so it will cover all.
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question