datetime conversion issue in sql server - sql-server-2005

if i try to cast string date to datetime like
select cast('12/01/2010' as datetime) then
it works
but if i try to cast like
select cast('22/01/2010' as datetime) then it is giving error.
again if i try to cast string date to datetime like
select cast('2010/12/01' as datetime) then it works
but if i try to cast like
select cast('2010/25/01' as datetime) then it is giving error. my requirement is whatever way user input date that should be successfully converted to datetime. please tell me best solution

In your case the sql server assumes, that date format id mm/dd/yyyy - US format,
you want to use French format, so use convert
select CONVERT(DATETIME, '12/01/2010', 103)
instead you'll get an error because there in no such a month number - 22
The best solution when passing datetime as string - to use short(without timezone) ISO format:
yyyyMMdd HH:mm:ss.ffff

I recommend you to use fixed '20111231' format. You do not need to use cast, convert or similar command.

Related

SQL How to format M/DD/YYYY (1/31/1960) to DD/MM/YYYY (31/01/1969)

I have a column that has date and time mixed together i.e. 1/31/1960 12:00:00AM and I would like to convert them into two-column through SQL function:
(a) DD/MM/YYYY i.e 31/01/1969
(b) HH:MM i.e 12:00
Thanks in advance.
Take a look at the CONVERT() function, specifically the style for datetime. Additionally, we can CAST() the DATETIME as a TIME data type to extract the time.
Assuming your original column is a DATETIME data type, you can run
SELECT
CONVERT(NVARCHAR(24),{DateField},103)
,CAST({DateField} AS TIME)
If it is string, you can cast it then convert
SELECT
CONVERT(NVARCHAR(24),CAST('1960-01-31' AS DATETIME),103) AS ReportingDate
,CAST(CAST('1960-01-31' AS DATETIME) AS TIME) AS ReportingTime
If you're on a sufficiently recent version of SQL Server, the FORMAT() function is your friend.
DECLARE #d DATE = GETDATE();
SELECT FORMAT(#d, 'dd/MM/yyyy');
Note, that second argument is a .NET formatting string, so you should be able to use whatever is available from the Framework.

How to get datepart from datetime in a Column

I want to convert the column (EXECUTION_LOCAL_DATE_TIME) which has datetime format as (YYYY-MM-DD hh:mm:ss.nnnnnnn) to format (YYYY-MM-DD). Ho do i get this. I am working on SQL server management studio
If your intention is to just get the DATE part of a DATETIME then you can just convert the format to DATE (note that this will return a 'Date' datatype, not specifically formatted to a string 'YYYY-MM-DD'.)
eg:
DECLARE #Dt DATETIME = '2019-01-25T12:00:00'
SELECT CONVERT(DATE, #Dt)
Will return '2019-01-25'
You want the CAST() function:
https://learn.microsoft.com/en-us/sql/t-sql/functions/cast-and-convert-transact-sql?view=sql-server-2017
Ideally you should return the datetime format from your query and let your presentation layer handle formatting.
However if you are using SQL server 2012 or higher then you can use the Format() function. See the below answer:
Convert Date format into DD/MMM/YYYY format in SQL Server
If you're using SQL Server 2012 or higher you can use the FORMAT() function.
In your case you'd need
SELECT FORMAT(EXECUTION_LOCAL_DATE_TIME, 'yyyy-MM-dd') FROM TABLE_NAME
You can find additional info here
https://www.mssqltips.com/sqlservertip/2655/format-sql-server-dates-with-format-function/
https://learn.microsoft.com/en-us/sql/t-sql/functions/format-transact-sql?view=sql-server-2017
Here Is the Code Worked For me
SELECT convert(varchar, EXECUTION_LOCAL_DATE_TIME, 111) from Tablename
The Execution_Local_Date_Time will be Converted to yyyy/mm/dd format.

Convert datetime string in datetime format in SQL server

I'm using MS SQL server and I have a date field of type text. The dates stored there are in this format
2017-03-01T18:23:02+0700
I'm trying to convert this field in a datetime field but I fail. I have tried
CONVERT(datetimeoffset,date, 127)
CONVERT(datetime,date, 127)
CONVERT(datetime2,date, 127)
but I keep getting
Conversion failed when converting date and/or time from character
string.
I think the problem is that according to ISO8601 the time offset must be in the format hh:mm while mine is hhmm. I don't mind keeping only the date (yyyy-mm-dd) if it is more easy.
I have read similar question but none matches exactly my case and I can't figure out the solution.
Try this
Declare #dt varchar(50)
set #dt = '2017-03-01T18:23:02+0700'
select convert(datetime, replace(LEFT(#dt, LEN(#dt) - 1), '+', '.'), 126)
If you need only date part then you can use below query
SELECT CAST(LEFT('2017-03-01T18:23:02+0700',10) as DATE)
Use Below query to convert datetime :
SELECT CONVERT(DATETIME,REPLACE(REPLACE('2017-03-01T18:23:02+070','T','
'),'+','.'),103)
For DATE only use below query :
SELECT CONVERT(DATE,REPLACE(REPLACE('2017-03-01T18:23:02+010','T','
'),'+','.'),102)
It doesn't seem to work in both ways (both raise error):
SELECT CONVERT(datetime,'2017-03-01T18:23:02+0700',127)
SELECT CONVERT(datetime,'2017-03-01T18:23:02+07:00',127)
It seems that it works only specifying Z as time zone:
SELECT CONVERT(datetime,'2017-03-01T18:23:02Z',127)

Convert from varchar into date in SQL Server

This looks easy solution but I can't seem to figure out as to why this is not working for me. I have a column that has data like this:
DateField
----------
12/16/2016
11/06/2016
All I want to do is to convert from varchar into a date column, but I am getting this error:
Conversion failed when converting date and/or time from character string.
Here is my simple query:
select convert (date, DateField) as convertedField
from myTable
Nothing wrong with the two examples you have given. There are some bad dates in your table which cannot be converted to date.
Use TRY_CONVERT function for bad dates it will return NULL
select TRY_Convert(date,DateField)
From myTable
You should always store dates in DATE/DATETIME datatype.
If you want to see the records which cannot be converted to date then
select DateField
From myTable
Where TRY_Convert(date,DateField) IS NULL
If working with a specific date format like mm/dd/yyyy You can specify it in Convert() function like the following
CONVERT(DATETIME,DATAFIELD,101)
If it still is not working, use TRY_CONVERT() to get which rows are throwing this exception:
SELECT *
FROM TBL
WHERE TRY_CONVERT(DATETIME, DATAFIELD, 101) IS NULL
This will return rows that cannot be converted
TRY_CONVERT() will return NULL if conversion failed
Read more about DateTime formats here:
SQL Server CONVERT() Function tutorial
Read TRY_CONVERT MSDN Article
You need to specify the format of date time while formatting. The date in your table is currently in U.S format so you should pass the third argument 101 in your convert function.
SELECT CONVERT(date,[DateField],101) FROM myTable;
Working Fiddle here http://rextester.com/NYKR49788
More info about date time style here: https://msdn.microsoft.com/en-us/library/ms187928.aspx

Format a string as American

Please see the SQL below:
select cast('13/01/2015' as datetime)
The error is: 'The conversion of a varchar data type to a datetime data type resulted in an out-of-range value'. I know I can do this will resolve it:
select cast('01/13/2015' as datetime)
Is there a way of formatting a string of: '13/01/2015' as '01/13/2015'
Don't use cast, use Convert. this way you can choose the date format.
select convert(datetime, '13/01/2015', 103)
select convert(datetime, '01/13/2015', 101)
You can set the dateformat and do something like
set dateformat dmy
select cast('13/01/2015' as datetime)
I would use CONVERT, but if you choose to use CAST then you might want to try this...
SET LANGUAGE british
SELECT CAST('13/01/2015' AS Datetime)
SET LANGUAGE us_english
SELECT CAST('01/13/2015' AS Datetime)
This still wont fix your formatting issue though. That's why I would use ..
CONVERT(DATETIME,'01/13/2015',101)
You could try:
SELECT CONVERT(CHAR(10),CONVERT(DATETIME,'13/01/2015',103),101))
This will convert the string to a date time in the format of DD/MM/YYYY, and then it will convert it to the MM/DD/YYYY format you are looking for.
Edit Note: I noticed you wanted the resultant in a string.