How would you recommend to store a date in a database? As milliseconds? In a QML application, I can easily get this by the Date.now() function. However, if the date is stored as milliseconds, how could I go about displaying the date, using some of the functions of the Date QML type? This seems to be shrouded by mystery to me at this minute. I would prefer the date to be printed locale-sensitively, so that different users in different countries get the culture-specific formatting.
Ok, it was pretty simple. I guess it is ok to store the date as milliseconds, as you can simply create a new Date object from that in QML. The locale formatting functions have couple of easy variants for printing both date and time separately:
Text {
...
property var dateOf: new Date(myTimeInMilliseconds)
text: dateOf.toLocaleDateString() + " " + dateOf.toLocaleTimeString()
}
Related
I have a flat file datasource that I'm using to construct a Dimension. One of the columns is a DateTime in the format: yyyy.MM.dd HH:MM, which I specified as the 'Date Converter Pattern'.
However, when I connect to my cube using an Excel Pivot Table, the date format defaults to: yyyy-MM-DDTHH:MM:ss.SSS and when I try to create a Timeline on my PivotTable, excel does not recognize this as a valid DateTime format.
is there any way to change this in the config files
thanks
To create a TimeLine Excel is using several DISCOVER requests and is more or less assuming it is talking to SSAS to discover an " attribute " hierarchy. Support has been added into icCube (from 6.0.1) to flag a hierarchy as an Excel TimeLine (new field in the hierarchy definition): this hierarchy must have an ALL level and a single DATE (i.e., days) level below.
I'm a bit lost, I understand you've converted to a DateTime the strings from the data source. Why do you see 'yyyy-MM-DDTHH:MM:ss.SSS' as the member names/labels ?
You can choose whatever you want to ?
My educated guess, Excel is taking for the timeline the key of the member not the label (that needs to be a DateTime object in the datasource).
Can you clarify ?
I am new to this forum so I hope I asking my question in the right place.
I have a problem inserting a datetime into a Google Spreadsheet from a form created in Appinventor2;
In app inventor2 I created a form that fills in a google spreadsheet. Basically I merged the Pizza Party example (http://appinventor.mit.edu/explore/ai2/pizzaparty.html) with this example http://puravidaapps.com/spreadsheet.php to use google spreadsheet instead of fusion table.
the user selects in how many minutes he wants his order and then sees all the orders in a table sorted by delivery time.
Problem A)
Firstly, i want to save the current datetime + the desired delay into the google spreadsheet and sort the table by this new datetime.
1) when i use the block "call clock format time" + "call clock addminutes" the spreadsheet is populated with a text, but then i can't sort the table by delivery datetime. in fact i believe the sorting is done on the number regardless of the am/pm or day of the month. so for example instead of having 4am, 6am, 2pm, 3pm i get : 2pm, 3pm, 4am, 6am.
2) I then tried to remove the block "call clock format time" and in the google form i kept the field format = text
but the google spreadsheet is populated with the following:
java.util.GregorianCalendar[time=1395531335908,areFieldsSet=true,lenient=true,zone=Europe/Dublin,firstDayOfWeek=2,minimalDaysInFirstWeek=4,ERA=1,YEAR=2014,MONTH=2,WEEK_OF_YEAR=12,WEEK_OF_MONTH=4,DAY_OF_MONTH=22,DAY_OF_YEAR=81,DAY_OF_WEEK=7,DAY_OF_WEEK_IN_MONTH=4,AM_PM=1,HOUR=11,HOUR_OF_DAY=23,MINUTE=35,SECOND=35,MILLISECOND=908,ZONE_OFFSET=0,DST_OFFSET=0]
3) I then tried to remove the block "call clock format time" and in the google form I changed the field format = time
but then the google spreadsheet isn't populated with anything.
4)I tried using the segment block, but after a while I realised the block "format time" actually returns this format: "hh:mm:ss AM/PM"
so selecting the 5 characters is not good enough because it does not take into account of the am/pm element as well as the day of the month.
5) I found a temp solution by defining the desired delivery time as a new global variable, and extracting a string in the format hh:mm by joining the blocks ".hour instant" and ".minute instant".
However this is not a final solution because what i extracted is of course a string of text and when sorting, 01:10 will be always considered smaller than 23:50 for example, regardless of the date.
So is there a way of actually saving in the google spreadsheet not a string of text, but actually the date and time?
Problem B)
Secondly, I would like to filter/show only the rows of the google spreadsheet have a delivery time expired by no more than 1 hour (as well as orders with delivery time in the future e.g. in 2 hours from now()).
I tried using some Google Visualization API Query Language commands, altering the url of the google spreadsheet (like WHERE "now() - Delivery Time < 60 mins)" (cannot remember the exact code I wrote) but unsucessfully.
Would anyone know how to filter my results?
thanks in advance
alterettore
So there's a few things to note.
If you're using Taifun's example as you mention, you'll notice that when you submit data to Google Spreadsheets using a form, the first column is always a timestamp, even if you're not submitting a date or time. Trying to send the current date/time is redundant - go ahead and make use of what Google provided.
Google Spreadsheets (and Excel) store Date/Time as a number. If you want to store a date in GS, the best way to do so is not formatted text, but by sending a number. Use AppInventor to calculate the number you need. For example, today (April 27) in GS is 41756. Noon today would be 41756.5
To generate this number, start with AI's Millisecond function. NOTE: Both GS and AI use milliseconds, but they have different 0 points, so you have to manipulate the result a bit. The formula I've used in AI in the past is this:
GS Date/Time = (Clock1.GetMillis(Clock1.Now) / 86400000) + 25569
Hope this helps!
I am working in C++ .net. I have a custom control that shows the contents of a dataBase with a bindingsource in between. I use labels in the control to bind the text property to the data in the dataset through a bindingsource with the following code:
mycontrol->Controls[i]->DataBindings->Add((gcnew System::Windows::Forms::Binding(L"Text",
this->bindingSourceRelRev_Data, mycolumn,true, System::Windows::Forms::DataSourceUpdateMode::OnValidation,
nullptr, L"t")));
Please, note that the code is an excerpt of a loop that iterates on all the controls, therefore the control[i], which would be the label control, and the variable mycolumn, which would be the column of the dataset to be binded to. It works fine apart of an unwanted behaviour that I haven't yet found the way to change.
The sofware runs in different parts of the world but the records must be in local time. The database stores the time in localtime as a DateTime value but the dataBinding interprets it as UTC and shows the time in the label with the timezone difference applied. For example, if the data is 24/06/2012 16:40, it will show 24/06/2012 22:40 in a 4 hours difference time zone.
I need it to show just the value as it was stored, without changes.
I can think of different ways to go arround, but non elegant:
-capture the text update event of the label and un-do the change...
-Store the date as String in the DB...
-fill manually the labels...
-...
If I bind without formating, it will not change the value, but then I have the raw datetime string on the label...
Please, any magic I am missing in the binding so that it will not assume it has to change the time zone?
Thank you very much in advance!
Adan
well, it seems that the problem was not actually on the binding but in the dataset itself. The columns' property DateTimeMode was set as undefinedlocal and this was serializing the dataimput and converting it to the local time of the machine viewing the data. Just changed the property to undefined and it works now as I wanted, just taking the date from the data unmodified.
I was confused by the documentation on the format provider for DateTime, which states that it serializes the date. Perhaps I missunderstood it... It actually doesn't.
Thank you very much anyway!
I have been reading all about converting TEXT fields into date formats and ways to use Python to create date objects but my question remains.
My table has a dateTime column that is specified as TEXT, I would like to build a constraint that forces input to be in dateTime format, but as SQLite doesn't do dates (as I would like) I haven't worked out how to do it.
My current ideas: 1. Limit number of characters
2. Set separate attributes for day, month and year and constrain their domains
3. It is silly to do this on the database side just do it in the user interface
I would appreciate your opinions on these or other options.
Thanks :)
I've been trying to solve the same issue and the method I came up with was to use the date/time functions to parse the value and check that it hasn't changed. Essentially the following:
CREATE TABLE dts_test (
dts TEXT CHECK (dts IS datetime(dts))
);
If the default format is not what you want you can use the strftime or similar to design whatever format you want, but it must be something that the built-in date and time functions can parse.
I am facing an issue in my Flex application.
I am creating some array collections and storing date objects in it.In the later part of the application I will create 'advanceddatagridcolumns' with these array collections as the data sources.
Initially while creating the Array Col , I do have the 'formats' given by user, for each array collection eg. '1995/06/25' but in the later part I have no access to these formats. I want to display this dates in the data grid in same way as the user has specified. Right now, it displays it in the default format 'Sun Jun 25 00:00:00 GMT+0530 1995' instead of '1995/06/25'.
I have a common 'labelFunction' for these advancedatagridcolumns, and thus I can not use the DateFormatter as I 'formatstring' would be different for different columns.
So is there some way to display/retrieve the date in the same format as stored and not in the default way. Or while creating the date object can't I specify that I would always like it to be returned in some desired format.
The Date class in Flex as far, as my experiences go, is not very versatile. My hunch is that this is by no means possible with the regular framework capabilities.
However, if the date does not need to be changed after the user has input it, you might just want to save it as String and only create a temporary ArrayCollection of Dates for displaying them. This way you don't need to worry about the format changing because you're saving the original value.
How are you parsing the dates anyway? I mean that are you finding out the format yourself with RegExps or such, or using the parse method of the Date class?
just create a labelfunction specific to that column only and then you can use the formatstring