dateTime is stored as an INTEGER, how do I turn each row into Darts DateTime object without wasting time?
query = await db.rawQuery(
'''SELECT dateTime FROM days WHERE (dateTime BETWEEN ${start.millisecondsSinceEpoch} AND ${end.millisecondsSinceEpoch})''');
I want this query to return a map/list of DateTime insted of milliseconds.
why not just :
fetch all data
for each data convert it into a DateTime, like this :
DateTime day = DateTime.fromMillisecondsSinceEpoch(data['timestamp_day']);
Related
I have a column that I need converting from string date time to an actual data time data value.
The current format is as follows
15-JUN-22 10.24.10.414000
and I need to change it to the following format
15-06-22 10.24.10.414000
I use a stored procedure to automatically change the format, but it fails on this stage due to the non numeric characters.
Is there a way map or change all the string months to int values within the datetime? and if so how?
Converts used so far
TRY_CAST(CREATE_DATE AS DATETIME2(7)) AS CREATE_DATE
AND
CASE WHEN LEN([INTERVAL_START_DATE]) > 0 THEN TRY_CONVERT(DATETIME2, [INTERVAL_START_DATE], 103) ELSE NULL END
try this
CAST({your field name} as date) CONVERT(date,'{systemClock.UtcNow.ToString("o")}',127)
I have a table with a varchar column which represent date and time in the next format:
dd/MM/yy hh:mm
For example: 27/01/13 07:57
I need to convert this column to DateTime type.
I tried to do it without success.
Assume that #varcharDT contains the VarChar DateTime and I want insert the converted value to #dateTimeDT variable.
DECLARE #varcharDT varchar(1000)
SELECT #varcharDT = dateTimeColumn from dbo.tempTable
--Trying to convert
DECLARE #dateTimeDT DateTime
SET #dateTimeDT= CONVERT (DATETIME, #varcharDT )
The last line raise the next exception:
Conversion failed when converting date and/or time from character string.
I think the conversion fails because my VarChar DateTime is in custom format.
How can I solve it?
I am working with SQL Server 2008 R2
Thanks
Try:
CONVERT(datetime, #varcharDT, 3)
The last number is the style for the convert. The list can be found in the MSDN documentation article CAST and CONVERT (Transact-SQL).
I have two datetime variables in VB.Net
Dim inDt As Datetime //contains date
Dim inTime As DateTime //contains time
I want to add both these variable in single DateTime variable , i didn't find any .Net function to do that.Is there any other way to do it?
Illustrating my comment above, you can do this:
DateTime combinedDateTime = inDt +
new TimeSpan(0, inTime.Hour, inTime.Minute, inTime.Second, inTime.Millisecond);
You could make use of the Ticks property and the AddTicks method:
Dim result As DateTime
result = inDt.AddTicks(inTime.Ticks)
I'm working on a data warehouse project and would like to know how to (preferably in a Derived Column component in a Data flow) strip the date piece off of a SQL datetime record.
Once I have the datetime converted to just a time I am going to do a lookup on the time to find the related time record in a time dimension table.
Can someone give me a simple function to accomplish this inside a derived column transform?
Example: Transform a datetime such as "12/02/2008 11:32:21 AM" into simply "11:32:21 AM".
I would just do a cast to DT_DBTIME type (using Derived Column transform, or Convert type transform). DT_DBTIME contains just (hours, minutes, seconds) part of the date/time, so you'll get rid of the date part.
If you need to do this in a variable expression Michael's solution won't work, but you can use the following expression:
(DT_DATE)(DT_DBDATE)GETDATE()
(DT_DBDATE) converts the current date and time to a date only. But the new datatype is not compatiple with SSIS's datetime. Therefore you'll have to use (DT_DATE) for converting to a compatible type.
Courtesy of this solution belongs to Russel Loski who has posted it in his blog:
http://www.bidn.com/blogs/RussLoski/ssas/1458/converting-datetime-to-date-in-ssis
Actually if you reverse the first 2 expressions like this: (DT_DBDATE)(DT_DATE)GETDATE()
instead of (DT_DATE)(DT_DBDATE)GETDATE(), then you will TRUNCATE the time off the date field.
If the DT_DATE expression is before the DT_DBDATE expression, you will still have the time portion in your output, but it will be reset to all zeroes.
Ran into this with writing a report for a scheduling app, needed the time that was stored as part of a datetime data type. I formated the datetime as 0 which gives you this mon dd yyyy hh:miAM (or PM), and just did a substring of that which returned the time only in an AM/PM format.
Example below.
DECLARE #S DATETIME = GETDATE()
SELECT SUBSTRING(CONVERT(NVARCHAR(30), #S , 0) , 13 , 10) AS ApptTime
, CONVERT(NVARCHAR(30), #S , 0) AS ApptDate
I personally use a series of functions for this. E.g.:
ALTER FUNCTION [dbo].[TIMEVALUE]
(
#Datetime datetime
)
RETURNS datetime
AS
BEGIN
RETURN (#Datetime - CAST(ROUND(CAST(#Datetime AS float), 0, 1) AS datetime))
END
I'd love to claim all the credit but it should really go to this guy.
DECLARE #DateNow smalldatetime
SET #DateNow='12:30'
select #DateNow
-------------------------------------OR--------------------------------------
select CAST( '12:30' as datetime )
Result: 1900-01-01 12:30:00.000 (i don't want this)
But i need this result in time format not string not datetime?
Result: 12:30 (i want this)
Like José said, you can use CONVERT to display a datetime as date. MSDN has a list of all possible formats. For example format 8 is hh:mi:ss:
select convert(varchar(32),getdate(),8)
12:51:21
Now, you can cut the seconds off by specifying less characters:
select convert(varchar(5),getdate(),8)
12:51
Another often used format is 121, yyyy-mm-dd hh:mi:ss.mmm(24h):
select convert(varchar(32),getdate(),121)
2009-05-08 12:51:21.987
Where you can pick the time part like:
select substring(convert(varchar(32),getdate(),121),12,5)
12:51
Or to combine the string trickeries:
select right(convert(varchar(16),getdate(),121),5)
12:51
Right? Right!
There's a TIME type in SQL Server 2008, but in previous versions, you can represent it as a varchar for display.
This is how you can retrieve the time portion of a DATETIME field in the format you want.
DECLARE #DateNow smalldatetime
SET #DateNow = GETDATE() -- 2009-05-08 12:58:02.680
SELECT CONVERT(CHAR(5), #DateNow, 8)
-- this returns the time portion as 12:58
You can use the CONVERT function.
By the way, there's no "TIME" datatype in SQL Server. So, the converted result will always be a STRING.
EDIT: There's no "TIME" datatype in SQL Server versions < SQL Server 2008.
If you need to compare, add and/or subtract time (only) values, think about the possibility to use a INT to store the "TIME" value and then to CONVERT it to CHAR when displaying the result.