Solved

how to find Date by a given hour in relative to current date time

Posted on 2011-03-22
6
227 Views
Last Modified: 2012-06-27
Hi Experts

this is a little bit complicated to me:

i get a hour (for example 22:00)
i should find the last date of this  hour
and the next date of this hour
and of course i have the getdate() to use it.

so actually i need 2 dates: previous date and next date

10x a lot
0
Comment
Question by:gudidi
  • 3
  • 2
6 Comments
 
LVL 18

Expert Comment

by:deighton
ID: 35190712
please give an example, it is not clear what you want to do.
0
 

Author Comment

by:gudidi
ID: 35190780
ok

i have from database the hour 22:00.

i need to calculate the datetime of last time that the hour was 22:00
and date time of next occurance of 22:00 hour.

for example:

if the time now is 18:00
the last  datetime of 22:00 was 21/03/2011
na dnext time is 22/03/2011
0
 
LVL 2

Accepted Solution

by:
CoolBurn28 earned 500 total points
ID: 35190955
hehehe nice
this would do the trick
select getdate() sysdate,DATEADD(hh, 22, getdate()) nxt_22,DATEADD(hh, -22, getdate()) prev_22

Open in new window

0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 

Author Comment

by:gudidi
ID: 35190997
10x so much
0
 
LVL 18

Expert Comment

by:deighton
ID: 35191109
DECLARE @HOUR as integer;
SET @HOUR = 20;
DECLARE @YEST as datetime;
DECLARE @TODAY as datetime;
DECLARE @TOMORROW as datetime;
DECLARE @BASE as datetime;
SET @BASE = CAST(FLOOR(CAST(getdate() AS FLOAT)) as datetime);
SET @YEST = dateadd(hour, @HOUR, dateadd(day,-1,@BASE));
SET @TODAY = dateadd(day, 1, @yest);
SET @TOMORROW=dateadd(day, 2, @yest);

SELECT CASE WHEN @TODAY <= getdate() THEN  @TODAY ELSE @YEST END AS LASTTIME,
	   CASE WHEN @TODAY >= getdate() THEN  @TODAY ELSE @TOMORROW END AS NEXTTIME

Open in new window

0
 
LVL 18

Expert Comment

by:deighton
ID: 35191133
the code you accepted gives the time 22 hours ago and 22 hours into the future, but it doesn't give you the time it was last 22 hours and the time it is next 22 hours

but if that is what you wanted so-be-it
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

This article explains how to reset the password of the sa account on a Microsoft SQL Server.  The steps in this article work in SQL 2005, 2008, 2008 R2, 2012, 2014 and 2016.
The Delta outage: 650 cancelled flights, more than 1200 delayed flights, thousands of frustrated customers, tens of millions of dollars in damages – plus untold reputational damage to one of the world’s most trusted airlines. All due to a catastroph…
Using examples as well as descriptions, and references to Books Online, show the different Recovery Models available in SQL Server and explain, as well as show how full, differential and transaction log backups are performed
Via a live example, show how to shrink a transaction log file down to a reasonable size.

930 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

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now