Is it possible to insert a date before 1970? I know, we life in an UNIX world but i need an workaround for my problem.
Thanks in advance!
Timestamps pre-1970 in typo3 are negative.
Any date on or before September 1752 is not supported though due to the switch from Julian to Gregorian. If you need to go that far back then you're out of luck.
Related
i have a table like this
unfortunately, the date has become to the year 2021, instead, I want it into 2020, how to change that?
Best way is You need to change it in source excel sheet. Can you check on the date format in the excel so that it would be more easy.
Other wise build your date in the formula , this we need to be careful when we move to next year 2022
makedate(
2020,
DATEPART('month', #2004-04-15#),
DATEPART('day', #2004-04-15#)
)
You can also use tableauprep, since I dont know which version you are using I cannot recommend that.
Try this and let me know if you need more help. Thanks!
I am working with overnight data (in particular I am concerned about the hours 6PM-6AM). I want this time frame to count as “day 1” for my study. My problem is that the date changes at midnight. Can anyone recommend code to reassign the time-frames that I am concerned about as “day1, day 2, etc.” instead of the Julian date. I am new to this so any suggestions would be very much appreciated!
*Update, here is a screenshot of the data I am working with. So, the column on the left is the julian date.. in this example I am looking at day 305 and 306 and the hours 18:20 (305) to 6:20 (306). I want these hours to be classified as day 1, instead of the date changing at midnight. Also, I need to get rid of the random date that is attached to my time column. I'm sure there is an easy way to do that, but if anyone knows off the top of your head I'd appreciate that!
Again, I'm very new to R and coding language, please be gentle!
Thanks a million.
You didn't mention what language you're using.
Given timespans 6pm to 6am, I believe the simplest solution would be to decrement 7 hours from any given date - then all of your timestamps would have the start day of the timespan as their day component.
I have to calculate the difference in days between two dates and I figured out that
there is no such thing as a DATEDIFF() function in DB2.
I tried doing it like that:
(DAYOFYEAR(date1)-DAYOFYEAR(date2)+(YEAR(date1)-YEAR(date2))*365)
This is obviously not working for leap years, but I do not have to deal with that.
I know that date1 is always later than date2.
Do I have any flaws in my logic? It is not working (it's an exercise and I have a function to test my results). Is there an easier way to do that?
Thank you.
It would possibly help if we knew what version of DB2 you were using and what platform it was running on. But it seems likely that you can do something like this:
select
days(my1stdate) - days(my2nddate) as myDuration
from mySchema.myTable
The DAYS() function converts a DATE value into the number of days between Jan 1, 0001, and the supplied DATE value. Once both DATEs are converted, the subtraction (difference) is straightforward.
How do I show only a particular day of the week in gwt-datePicker ?
E.g
If I select January or any month of the year, I want to see only "Tuesdays" for that month.
Cheers
Prince
Short answer: With the default component you cannot.
I would recommend you to create your own widget. Remember that GWT doesn't have support for the Calendar Object, so you'll need to do your own calculations.
I had a similar requirement once where the datepicker popup needed to show the week number in an additional column. Since you cannot subclass/override all the necessary behaviour of the standard classes, there was nothing for it in the end but to rip out the source code and create a new implementation with minor changes.
As for date calculations, there is a port of joda time which you can import client-side. Quite a bit of overkill if you only need the day of the week, though.
http://code.google.com/p/gwt-time/
this is my question:
I'm migrating data from a Btrieve file (.dat) through Pervasive Control Center and there is field type which is defined as integer but is a date and for example the date '31/12/2009' (seen in the legacy system) is view it as the number 733772 when I export it.
The legacy system shows the date correctly but I can't export it in the same format or at least I can't convert it. Does anybody know how to convert this number through Excel or something?
When I divided 733772 by 365.2425 (Number of days in year considering Leap year and 29 days of Feb - http://www.timeanddate.com/date/leapyear.html), it gave back 2009.
Go to format cells and changing category to date.