In this tutorial, you have learned how to use how to convert a datetime to a date using the CONVERT(), TRY_CONVERT(), and CAST() functions. This example uses the CAST() function to convert the current datetime to a date value: SELECT CAST( GETDATE() AS DATE) date The following statement converts a datetime value to a date using the CAST() function: CAST(datetime_expression AS DATE) This example uses the TRY_CONVERT() function to convert the current datetime to a date: SELECT TRY_CONVERT( DATE, GETDATE()) Ĭode language: SQL (Structured Query Language) ( sql ) Convert datetime to date using the CAST() function Unlike the CONVERT() function, the TRY_CONVERT() function returns NULL if the conversion fails. After this, use the Replace () function to replace colon (:) with an empty string in hh:mm:ss string. After this, use another Convert () function to get the hh:mm:ss string from the DateTime value. Similarly, the TRY_CONVERT() can also be used to convert the datetime to a date: TRY_CONVERT(DATE, datetime_expression) First, use the SQL Server Convert () function to change the DateTime expression to yyyymmdd string format. Convert datetime to date using the TRY_CONVERT() function Note that the GETDATE() function returns the current database server’s datetime. The following example uses the CONVERT() function to convert a datetime to a date: SELECT CONVERT( DATE, GETDATE()) date The CONVERT() function will raise an error if the conversion fails. In this syntax, the datetime_expresssion is any valid expression that evaluates to a valid datetime value. This statement uses the CONVERT() function to convert a datetime to a date: CONVERT(DATE, datetime_expression)Ĭode language: SQL (Structured Query Language) ( sql ) Convert datetime to date using the CONVERT() function To convert a datetime to a date, you can use the CONVERT(), TRY_CONVERT(), or CAST() function. However, you should only use this function if you need to specify how the date and time data should be formatted, because its performance is not as good as CAST().Summary: in this tutorial, you will learn how to convert a datetime to a DATE by using the CONVERT(), TRY_CONVERT(), and CAST() functions. The CONVERT() function takes three arguments: the new data type, the string to convert, and the (optional) desired format. The CAST() function is ANSI SQL Standard and its performance is better than CONVERT() or PARSE().įinally, you can also use the CONVERT() function. You can read more in the SQL Server documentation. The string containing the date and time to convert must be in the format of the T-SQL date and time data type.
If you’re operating on a string representing a time value that doesn’t store additional data (like the name of the week day), use the CASE() function. In this case, you should use the PARSE() function, even though it doesn’t have the best performance.
#Convert datetime to string sql update#
PARSE('Niedziela, 2 lutego 2020 11:23:11.1134505' AS TIME USING 'pl-PL' )įor more about culture parameter values, see the official SQL Server documentation. If you wanna update a table with that DateTime, you can use your SQL string like this example: int fieldId DateTime myDateTime DateTime. If you’re using a spoken language that’s different from the server language, include the keyword USING and the appropriate culture code. Here is a website that has a list of all of the conversions: How to Format datetime & date in SQL Server. Here is one way: SELECT convert (varchar (25), getdate (), 121) yyyy-mm-dd hh:mm:ss.mmm. Don’t use the CONVERT() or CAST() functions in this case they also return a TIME data type, but without the day of the week. There are many different ways to convert a datetime to a string. Notice that the time is only part of this string, which also contains the name of the week day. In our example, the string 'Febru11:23:11.1134505' stores a time value. The string should contain a value which represents this data type. This function takes the string to convert, the keyword AS, and a new data type (in our example, TIME). Use the PARSE() function to convert a string containing a weekday name, date, and time to the TIME data type. In this query, I worked out the result came from current date of the day. PARSE('Sunday, 2 February 2020 11:23:11.1134505' AS TIME ) declare mydatetime datetime set mydatetime GETDATE () - comment out for null value -set mydatetime GETDATE () select case when mydatetime IS NULL THEN '' else convert (varchar (20),mydatetime,120) end as converteddate.
We need to convert a string containing a weekday name, date, and time to a TIME value. You’d like to convert a string containing a date and time to a TIME value in SQL Server.
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