I'm trying to convert a string to datetime like this select CONVERT(datetime, '31-05-2022 04:00:00.105', 105) but the precision of the milliseconds changes. How is it possible ?
In my case it gives me 2022-05-31 04:00:00.107
Thanks for your help.
Datetime is only accurate to 3.33 milliseconds. If you try to wedge a value in that is more precise than that, MS SQL will round to the near acceptable value. More information is available here:
Milliseconds in my DateTime changes when stored in SQL Server
You could try the 'datetime2' (or 'datetimeoffset') column type to account for the greater precision required
select CONVERT(datetime2, '31-05-2022 04:00:00.105', 105)
Related
My data source is giving me a column of type numeric(32,0) that is the epoch value, and I want to convert that to a DATETIME in my database. I've got a Derived Column transform and for the expression I tried to do this:
DATEADD("SECOND", CAST([Last Modified Date] AS BIGINT) / 1000, (DT_DBTIMESTAMP)"1970-01-01")
But it's giving me parsing errors. Can someone help me with the proper syntax for this please? If I don't quote "SECOND" then it immediately tells me that SECOND is not an input column.
Even though the input is the numeric(32,0) type they're all integer values, such as 1564371486110.
I do not immediately understand your cast and divide by 1000.
SSMS
select datediff(ss, '1970-01-01 00:00:00', getdate())
1564069434
Expression
dateadd("SS", 1564069434, (DT_DBTIMESTAMP)"1970-01-01 00:00:00")
2019-07-25 15:51:17.763
Edit - I am going to assume you're dividing for milliseconds on the epoch time.
Derived Column Transformation Editor - Expression
DATEADD("SS",(DT_UI8)SUBSTRING((DT_WSTR,32)epochtime,1,LEN(TRIM((DT_WSTR,32)epochtime)) - 3),(DT_DBTIMESTAMP)"1970-01-01 00:00:00")
I want to add an hour in the parameter TimeStamp, but not with declare parameter i.e
DECLARE #datetime2 datetime2 = '2019-03-01T09:25:21.1+01:00'
SELECT DATEADD(hour,1,#datetime)
I have a column name TimeStamp in a table and i want to add in all data plus 1 hour.
The column
TimeStamp
2019-03-01T09:25:20.1+01:00
2019-03-01T09:25:21.1+01:00
2019-03-01T09:25:19.1+01:00
I try something like this
SELECT DATEADD(hour,1, TimeStamp), but i have an error
Conversion failed when converting date and/or time from character
string.
Any possible answers ??
Thanks
SELECT DATEADD(hour,1, TimeStamp) is correct
However, The format in TimeStamp is wrong,
So, cast it to DateTime2 First
CAST(TimeStamp as DateTime2)
OR
CAST('2019-03-01T09:25:20.1+01:00' as DateTime2)
So,
SELECT DATEADD(hour, 1, CAST(TimeStamp as DateTime2))
Conversion failed when converting date and/or time from character
string.
The error message means that column TimeStamp stored as a string. DATEADD expects a valid value that is date/datetime/datetime2 or can be converted into it from a string. Because a sample value look like DATETIME2, such extra conversion perhaps is needed:
SELECT DATEADD(hour,1, CAST(TimeStamp as datetime2))
Your syntax will be fine as defined.
It might be a value in your column that is not able to parse to datetime2 because it contains an invalid character.
You could add the ISDATE() to the expression to check if it is valid.
https://learn.microsoft.com/en-us/sql/t-sql/functions/isdate-transact-sql?view=sql-server-2017
edit: forgot to mention you could parse before adding with try_cast or try_convert to datetime2
In Your Timestamp +01:00 represents the Time offset to GMT. You can convert this to your local time and then Add the Hours using DATEADD()
or Remove the Time Offset from the string and add one hour using DATEADD() As suggested by Others.
According to this https://learn.microsoft.com/en-us/sql/t-sql/functions/cast-and-convert-transact-sql?view=sql-server-2017#date-and-time-styles
you have to convert the timestamp with timezone using type 127.
127 is the input format for:
ISO8601 with time zone Z.
yyyy-mm-ddThh:mi:ss.mmmZ (no spaces)
Note: For a milliseconds (mmm) value of 0, the millisecond decimal value will not display. For example, the value '2012-11-07T18:26:20.000 will display as '2012-11-07T18:26:20'.
select convert(datetime2, '2019-03-01T09:25:20.1+01:00', 127)
if you are not using convert and the 127 by using cast you may run in conversion problems depending on language settings of the users.
Maybe you are after this?
select dateadd(hour,1,convert(datetimeoffset, TimeStamp))
Best to not store dates and times as text though.
Edit: Note that his will retain your time zone information if that is important to you.
I need to convert a string to datetime. I need to store datetime with milliseconds in SQL Server 2005.
example:
SELECT CAST('2010-07-28 20:07:25.733000000' AS DATETIME)
when I try I am getting error like
Conversion failed when converting datetime from character string
You'll need to truncate.
SELECT CONVERT(DATETIME, CONVERT(CHAR(23), '2010-07-28 20:07:25.733000000'));
(With rounding) the milisecond range is 0-999 in a DATETIME, for more precision use DATETIME2 if your using SQL2K8.
If you remove the last 0:s in the miliseconds this will work:
SELECT CAST('2010-07-28 20:07:25:733' AS DATETIME)
I'm trying to make my SQL Server table datetime columns save datetime with AM/PM. How to make SQL Server to save datetime with AM/PM format?
Right now it saves date like this: 2012-01-23 14:47:00.000
Is it possible to save it 2012-01-23 02:47:00.000 PM ??
Or does SQL Server save the date and time in this format (2012-01-23 14:47:00.000) all the time and I need to convert it just on output and input?
Is it even possible to save it in this format (2012-01-23 02:47:00.000 PM)? Or does SQL Server save datetime in 24 hour format?
thanks indeed for any help. sorry for language. ;)
Internally the date and time are stored as a number.
Whether it's displayed in a 12 or 24 hour clock is up to the program formatting it for display.
As Andrew said, Datetime format is stored not as string. so, you can use CONVERT function to get the datetime value in approprate format. for example,
SELECT CONVERT(VARCHAR(20), GETDATE(), 100)
to learn more about datetime formatting, see this article
AM/PM serves only for visualization, if you need to display them, use CONVERT keyword:
SELECT CONVERT(varchar, YourDateTimeField, 109)
FROM YourTable
If you need to store AM/PM - it is makes no sense for datetime type, use varchar type instead.
You can simply use CONVERT function as following:
select CONVERT(VARCHAR,GETDATE(),108)
http://www.fmsinc.com/free/NewTips/SQL/AM_PM_time_format_in_SQL.asp
http://msdn.microsoft.com/en-us/library/Aa226054
http://blogs.msdn.com/b/kathykam/archive/2006/09/29/773041.aspx
Depending on the accuracy of the datetime you are storing you might be able to clean it up with
REPLACE(CONVERT (varchar, YourDateTimeField, 109), ':00.0000000', ' ')
This will not work if your date field is populated with GETDATE() as that means it will contain seconds and milliseconds but it will work if the field is populated by a user and seconds and milliseconds are all zeros
I've got a varchar field in SQL Sever 2005 that's storing a time value in the format "hh:mm"ss.mmmm".
What I really want to do is take the average using the built in aggregate function of those time values. However, this:
SELECT AVG(TimeField) FROM TableWithTimeValues
doesn't work, since (of course) SQL won't average varchars. However, this
SELECT AVG(CAST(TimeField as datetime)) FROM TableWithTimeValues
also doesn't work. As near as I can tell, SQL doesn't know how to convert a value with only time and no date into a datetime field. I've tried a wide variety of things to get SQL to turn that field into a datetime, but so far, no luck.
Can anyone suggest a better way?
SQL Server can convert a time-only portion of a datetime value from string to datetime, however in your example, you have a precision of 4 decimal places. SQL Server 2005 only recognizes 3 places. Therefore, you will need to truncate the right-most character:
create table #TableWithTimeValues
(
TimeField varchar(13) not null
)
insert into #TableWithTimeValues
select '04:00:00.0000'
union all
select '05:00:00.0000'
union all
select '06:00:00.0000'
SELECT CAST(TimeField as datetime) FROM #TableWithTimeValues
--Msg 241, Level 16, State 1, Line 1
--Conversion failed when converting datetime from character string.
SELECT CAST(LEFT(TimeField, 12) as datetime) FROM #TableWithTimeValues
--Success!
This will convert valid values into a DATETIME starting on 1900-01-01. SQL Server calculates dates based on 1 day = 1 (integer). Portions of days are then portions of the value 1 (i.e. noon is 0.5). Because a date was not specified in the conversion, SQL Server assigned the value of 0 days (1900-01-01), which accommodates our need to average the time portion.
To perform an AVG operation on a DATETIME, you must first convert the DATETIME to a decimal value, perform the aggregation, then cast back. For example
SELECT CAST(AVG(CAST(CAST(LEFT(TimeField, 12) as datetime) AS FLOAT)) AS DATETIME) FROM #TableWithTimeValues
--1900-01-01 05:00:00.000
If you need to store this with an extra decimal place, you can convert the DATETIME to a VARCHAR with time portion only and pad the string back to 13 characters:
SELECT CONVERT(VARCHAR, CAST(AVG(CAST(CAST(LEFT(TimeField, 12) as datetime) AS FLOAT)) AS DATETIME), 114) + '0' FROM #TableWithTimeValues
Try this
AVG(CAST(CAST('1900-01-01 ' + TimeField AS DateTime) AS Float))
You really should store those in a datetime column anyway. Just use a consistent date for that part (1/1/1900 is very common). Then you can just call AVG() and not worry about it.
I used Cadaeic's response to get an answer I was looking for, so I thought I should share the code....
I was looking for a query that would average ALL my times together and give me an overall Turn Around Time for all approvals. Below is a nested statement that gives you the AVG TAT for individual id's and and when nested an overall TAT
SELECT
-- calculates overall TAT for ALL Approvals for specified period of time
-- depending on parameters of query
CONVERT(VARCHAR, CAST(AVG(CAST(CAST(LEFT(Tat_mins, 12) as datetime) AS FLOAT)) AS DATETIME), 108) + '0'
from
(
-- tat is for individual approvals
SELECT
dbo.credit_application.decision_status,
dbo.credit_application.application_id,
cast(dbo.credit_application.data_entry_complete as date) as'Data Entry Date',
cast(dbo.credit_application.decision_date as DATE) as 'Decision Date',
avg(datediff(minute, dbo.credit_application.data_entry_complete, dbo.credit_application.decision_date)) as 'TAT Minutes',
convert (char(5), DateAdd(minute, Datediff(minute,dbo.credit_application.data_entry_complete, dbo.credit_application.decision_date),'00:00:00'),108) as 'TAT_Mins'
FROM dbo.credit_application
where Decision_status not in ('P','N')
group by dbo.credit_application.decision_status,
dbo.credit_application.data_entry_complete,
dbo.credit_application.decision_date
--dbo.credit_application.application_id
)bb
How do you think to average on datetime?
I guess that you need to GROUP BY some period (Hour?), and display Count(*)?
SQL Server stores datetime data as 2 4-byte integers, hence a datetime take 8 bytes. The first is days since the base date and the second is milliseconds since midnight.
You can convert a datetime value to an integer and perform mathematical operations, but the convert only returns the "days" portion of the datetime value e.g. select convert(int,getdate()). It is more difficult to return the "time" portion as an integer.
Is using SQL Server 2008 an option for you? That version has a new dedicated time data type.
Thanks, Andy.
I'd work out the difference between all of the dates and an arbitrary point (01/01/1900), average it and then add it back on to the arbitrary point.