This question already has answers here:
Convert varchar into datetime in SQL Server
(13 answers)
Closed 10 years ago.
I have a column of dates with no delimiters. The column is nvarchar. The strings are consistent in length and format of MMDDYYYY. How can I convert these values to datetime?
edit - this question is in reference to sql server.
Assuming SQL Server:
DECLARE #A NVARCHAR(10)
SET #A = '11302012'
SELECT CONVERT(DATETIME,LEFT(#A,2) + '/' +
SUBSTRING(#A,3,2) + '/' + RIGHT(#A,4),101)
BEGIN
DECLARE #d DATETIME
DECLARE #s NVARCHAR(32)
SET #s = N'12012013'
SET #d = SUBSTRING(#s, 5,4) + SUBSTRING(#s, 1,2) + SUBSTRING(#s, 3,2)
SELECT #d
END
You just have to mangle the string into a format SQL server can parse correctly into a date. In the above it's the YYYYMMDD format.
EDIT Removed "-"'s because French language settings break them.
First change the format to the one that always works no matter what server settings (YYYYMMDD) using two simple string functions, then convert to datetime:
declare #datestring varchar(8) = '11302012';
select CONVERT(datetime, RIGHT(#datestring, 4) + LEFT(#datestring, 4)) ConvertedDatetime;
Related
I have tried with the following sample
SELECT
FORMAT(CONVERT(DATETIME,'01011900'), 'dd/MM/yyyy')
FROM
identities
WHERE
id_type = 'VID'
Try this:
SELECT FORMAT(CONVERT(DATETIME,STUFF(STUFF('01011900',5,0,'/'),3,0,'/')),'dd/MM/yyyy')
Insert / using STUFF, and then convert it.
STUFF(STUFF('01011900',5,0,'/'),3,0,'/') -- 01/01/1900
Update:
I tried the following also,
DECLARE #DateString varchar(10) = '12202012' --19991231 --25122000
DECLARE #DateFormat varchar(10)
DECLARE #Date datetime
BEGIN TRY
SET #Date = CAST(#DateString AS DATETIME)
SET #DateFormat = 'Valid'
END TRY
BEGIN CATCH
BEGIN TRY
SET #DateFormat = 'ddMMyyyy'
SET #Date = CONVERT(DATETIME,STUFF(STUFF(#DateString,5,0,'/'),3,0,'/'))
END TRY
BEGIN CATCH
SET #DateFormat = 'MMddyyyy'
SET #Date = CONVERT(DATETIME,STUFF(STUFF(#DateString,1,2,''),3,0,
'/' + LEFT(#DateString,2) + '/'))
END CATCH
END CATCH
SELECT
#DateString InputDate,
#DateFormat InputDateFormat,
#Date OutputDate
Your data should be 19000101.So your input needs to be modified first then we need to use Convert to get your appropriate format.
declare #inp varchar(10) = '01011900'
select CONVERT(varchar, cast(right(#inp,4)+''+left(#inp,4) as datetime), 101)
--Output : 01/01/1900
Right now your question is absurd. There cannot be a generic format that can handle all the date formats, you need to provide that information to your query ( you would be much better of with a stored procedure in this scenario ) where you pass the date format string too. You could do something like this in your SELECT CASE
if the format is ddmmyyyy, do what JesuRaja suggested. But its already answered in SO
SELECT CONVERT (datetime, Stuff(Stuff('311012',5,0,'.'),3,0,'.'), 4)
if its mmddyyyy, see this answer
DECLARE #Date char(8)
SET #Date='12312009'
SELECT CONVERT(datetime,RIGHT(#Date,4)+LEFT(#Date,2)+SUBSTRING(#Date,3,2))
if its yyyymmdd, just do a CAST
SELECT CAST('20041223' AS datetime)
Bottomline is, you must specify the date format. For example, consider the string 20122012. Can you guess the date format?
Also, you cannot force the server to use / as your separator. The SQL Server will use either /, . or - depending on the Culture of the server.
I have one column capturedatetime(Char(30)):
2006-04-25T15:50:59.997000 PM
And I want to convert it and load it at other table column which have is in DateTime. either by T-sql or SSIS which ever way.
I have tried with:
select CONVERT(datetime, '2006-04-25T15:50:59.997000 PM', 126)
But it creates an error:
Conversion failed when converting date and/or time from character string
Late update:
In this column I also have other data that is in a completely different format:
29-JAN-10 08.57.41.000000 PM
(1) STOP storing datetime data in string columns! This is nothing, nothing, nothing but trouble.
(2) Why on earth does your column get data in two different string formats that aren't even valid? Why does the string use 24 hour time and have AM/PM suffix? Why use a regional string format and Y2K disaster like 29-JAN-10?
Here is one way, but it's awfully ugly. I highly recommend you fix the SSIS process to give you valid datetime values in the first place, if not as datetimes, at least as valid ISO strings (yyyy-mm-ddThh:mm:ss.nnn):
DECLARE #x TABLE (d CHAR(30));
INSERT #x SELECT '2006-04-25T15:50:59.997000 PM'
UNION ALL SELECT '29-JAN-10 08.57.41.000000 PM';
SET LANGUAGE ENGLISH; -- this is important, else style 6 may not work
SELECT
CASE WHEN d LIKE '__[0-9]%' THEN
CONVERT(DATETIME, LEFT(d, 23))
WHEN d LIKE '[0-9][0-9]-%' THEN
CONVERT(DATETIME, CONVERT(CHAR(8),
CONVERT(DATETIME,REPLACE(LEFT(d,9),' ','-'),6),112)
+ ' ' + REPLACE(SUBSTRING(d,11,8),'.',':')
+ ' ' + RIGHT(RTRIM(d),2))
END
FROM #x;
The conversion for 126 requires no spaces ... I've got it to work like this:
declare #T varchar(50)
declare #dt datetime
set #T = '2006-04-25T15:50:59.997'
set #dt = convert(datetime,#t,126)
select #T, #dt
select convert(datetime,left('2006-04-25T15:50:59.997000 PM',23))
or
select convert(datetime,left(capturedatetime,23))
If you use cast, you do not even need to supply a format. Code snippet below tested on SQL 2012 Developer version.
declare #var_string varchar(50) = '2006-04-25T15:50:59.997';
declare #var_datetime datetime = cast(#var_string as datetime);
select #var_string as my_string, #var_datetime as my_variable;
This question already has answers here:
Convert varchar into datetime in SQL Server
(13 answers)
Closed 9 years ago.
Have date in varchar (dayname,month date,year) like (wednesday, january 16, 1013) and i have to convert it in datetime format. i have tried options like convert function and some other. but didn't get it.
The conversion works without the name of the day in the string. Remove it then cast to datetime:
declare #dateString varchar(50)
set #dateString = 'wednesday, january 16, 2013'
declare #index int
set #index = charindex( ',', #dateString )
set #dateString = substring( #dateString, #index + 1, len(#dateString) - #index)
select cast(#dateString as datetime)
This is in MS SQL Server.
I have a varchar in the format yyyy-MM-dd-hh.mm.ss.nnnnnn
For example: 2010-09-17-20.52.31.870000
I want to convert this into a datetime... but ISDATE function in MSSQL says that is not a valid date and CONVERT won't work. Is there a way to use the convert function so that I can tell it what format the date is in?
I also want to check first that it is a valid date since the varchar input may contain nothing or it may contain an invalid date.
For example, invalid data of 2010-xx-r7-99.53esdfd.31.870000... I would skip that data and not even try to convert.
As far as I'm aware, SQL Server 2005 only supports milliseconds up to 3 digits, so you could replace the periods with colons, and grab the left and right portions (ignoring the hyphen between the day and hours) and come up with something like this:
DECLARE #myDate varchar(50)
SET #myDate = '2010-09-17-20.52.31.870000'
PRINT isdate(left(#myDate, 10) + ' ' +
replace(substring(#myDate, 12, 12), '.', ':')) -- Should print '1'
PRINT cast(left(#myDate, 10) + ' ' +
replace(substring(#myDate, 12, 12), '.', ':') as datetime)
... which will effectively give you 870 milliseconds
The ISO 8601 standard separates the date and time with the letter T. Maybe that's all it needs to convert successfully? Some conversion implementations accept a space there too. I've never seen a hyphen there.
You would have to change the punctuation a bit to make it work, and reduce the precision from microseconds to millisecond. This works:
convert(datetime, '2010-09-17 20:52:31.870', 121)
What you are getting in is a bit wonky, but this works (tested):
DECLARE #temp as varchar(50)
SET #temp = '2010-09-17-20.52.31.870'
SET #temp = replace(#temp,'.',':')
set #temp = stuff(#temp,11,1,'T')
set #temp = stuff(#temp,20,1,'.')
select #temp
select cast(#temp as datetime)
NB I cut off the extra 0s, you could do this with substring if there really are those extra ones.
How do I convert a string of format mmddyyyy into datetime in SQL Server 2008?
My target column is in DateTime
I have tried with Convert and most of the Date style values however I get an error message:
'The conversion of a varchar data type to a datetime data type resulted in an out-of-range value.'
OP wants mmddyy and a plain convert will not work for that:
select convert(datetime,'12312009')
Msg 242, Level 16, State 3, Line 1
The conversion of a char data type to a datetime data type resulted in
an out-of-range datetime value
so try this:
DECLARE #Date char(8)
set #Date='12312009'
SELECT CONVERT(datetime,RIGHT(#Date,4)+LEFT(#Date,2)+SUBSTRING(#Date,3,2))
OUTPUT:
-----------------------
2009-12-31 00:00:00.000
(1 row(s) affected)
SQL Server can implicitly cast strings in the form of 'YYYYMMDD' to a datetime - all other strings must be explicitly cast. here are two quick code blocks which will do the conversion from the form you are talking about:
version 1 uses unit variables:
BEGIN
DECLARE #input VARCHAR(8), #mon CHAR(2),
#day char(2), #year char(4), #output DATETIME
SET #input = '10022009' --today's date
SELECT #mon = LEFT(#input, 2), #day = SUBSTRING(#input, 3,2), #year = RIGHT(#input,4)
SELECT #output = #year+#mon+#day
SELECT #output
END
version 2 does not use unit variables:
BEGIN
DECLARE #input CHAR(8), #output DATETIME
SET #input = '10022009' --today's date
SELECT #output = RIGHT(#input,4) + SUBSTRING(#input, 3,2) + LEFT(#input, 2)
SELECT #output
END
Both cases rely on sql server's ability to do that implicit conversion.
Likely you have bad data that cannot convert. Dates should never be stored in varchar becasue it will allow dates such as ASAP or 02/30/2009. Use the isdate() function on your data to find the records which can't convert.
OK I tested with known good data and still got the message. You need to convert to a different format becasue it does not know if 12302009 is mmddyyyy or ddmmyyyy. The format of yyyymmdd is not ambiguous and SQL Server will convert it correctly
I got this to work:
cast( right(#date,4) + left(#date,4) as datetime)
You will still get an error message though if you have any that are in a non-standard format like '112009' or some text value or a true out of range date.
I found this helpful for my conversion, without string manipulation. https://learn.microsoft.com/en-us/sql/t-sql/functions/cast-and-convert-transact-sql
CONVERT(VARCHAR(23), #lastUploadEndDate, 121)
yyyy-mm-dd hh:mi:ss.mmm(24h) was the format I needed.
Convert would be the normal answer, but the format is not a recognised format for the converter, mm/dd/yyyy could be converted using convert(datetime,yourdatestring,101) but you do not have that format so it fails.
The problem is the format being non-standard, you will have to manipulate it to a standard the convert can understand from those available.
Hacked together, if you can guarentee the format
declare #date char(8)
set #date = '12312009'
select convert(datetime, substring(#date,5,4) + substring(#date,1,2) + substring(#date,3,2),112)
Look at CAST / CONVERT in BOL that should be a start.
If your target column is datetime you don't need to convert it, SQL will do it for you.
Otherwise
CONVERT(datetime, '20090101')
Should do it.
This is a link that should help as well:
I'd use STUFF to insert dividing chars and then use CONVERT with the appropriate style. Something like this:
DECLARE #dt VARCHAR(100)='111290';
SELECT CONVERT(DATETIME,STUFF(STUFF(#dt,3,0,'/'),6,0,'/'),3)
First you use two times STUFF to get 11/12/90 instead of 111290, than you use the 3 to convert this to datetime (or any other fitting format: use . for german, - for british...) More details on CAST and CONVERT
Best was, to store date and time values properly.
This should be either "universal unseparated format" yyyyMMdd
or (especially within XML) it should be ISO8601: yyyy-MM-dd or yyyy-MM-ddThh:mm:ss More details on ISO8601
Any culture specific format will lead into troubles sooner or later...
use Try_Convert:Returns a value cast to the specified data type if the cast succeeds; otherwise, returns null.
DECLARE #DateString VARCHAR(10) ='20160805'
SELECT TRY_CONVERT(DATETIME,#DateString)
SET #DateString ='Invalid Date'
SELECT TRY_CONVERT(DATETIME,#DateString)
Link:MSDN TRY_CONVERT (Transact-SQL)
I had luck with something similar:
Convert(DATETIME, CONVERT(VARCHAR(2), #Month) + '/' + CONVERT(VARCHAR(2), #Day)
+ '/' + CONVERT(VARCHAR(4), #Year))
The root cause of this issue can be in the regional settings - DB waiting for YYYY-MM-DD while an app sents, for example, DD-MM-YYYY (Russian locale format) as it was in my case. All I did - change locale format from Russian to English (United States) and voilà.
This seems the easiest way..
SELECT REPLACE(CONVERT(CHAR(10), GETDATE(), 110),'-','')
SQL standard dates while inserting or updating Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM.
So if you are inserting/Updating below 1/1/1753 you will get this error.
DECLARE #d char(8)
SET #d = '06082020' /* MMDDYYYY means June 8. 2020 */
SELECT CAST(FORMAT (CAST (#d AS INT), '##/##/####') as DATETIME)
Result returned is the original date string in #d as a DateTime.