![]() ![]() The TRY_CONVERT() function, on the other hand, returns NULL instead of raising an error if the conversion fails: SELECT TRY_CONVERT(DATETIME, '', 102) result Ĭode language: SQL (Structured Query Language) ( sql ) Converting a string in ANSI/ISO and US date format to a datetimeīoth CONVERT() and TRY_CONVERT() function can recognize ANSI/ISO and US formats with various delimiters by default so you don’t have to add the style parameter. The following is the error message: The conversion of a varchar data type to a datetime data type resulted in an out-of-range value. If the conversion fails, the CONVERT() function will raise an error: SELECT CONVERT(DATETIME, '', 102) result ![]() This example uses the CONVERT() function to convert a string in ANSI date format to a datetime: SELECT CONVERT(DATETIME, '', 102) result The main difference between CONVERT() and TRY_CONVERT() is that in case of conversion fails, the CONVERT() function raises an error while the TRY_CONVERT() function returns NULL. SQL Server provides the CONVERT() function that converts a value of one type to another: CONVERT(target_type, expression )Ĭode language: SQL (Structured Query Language) ( sql )īesides the CONVERT() function, you can also use the TRY_CONVERT() function: TRY_CONVERT(target_type, expression ) Introduction to CONVERT() and TRY_CONVERT() functions To solve this issue, you can use TRY_CAST(), TRY_CONVERT() or TRY_PARSE() functions to check if the value can be converted or not, if so, the function will return the conversion result, else it will return a NULL value.Summary: in this tutorial, you will learn how to convert a string to a datetime in SQL Server using the CONVERT() and TRY_CONVERT() function. ![]() As an example, many times you may face bad date values such as “” these values cannot be converted and will throw a data conversion exception. One of the main issues of the data type conversion functions is that they cannot handle the erroneous value. TRY_CAST(), TRY_CONVERT() and TRY_PARSE() As an example, if we try to parse value without passing the culture information, it will fail since “dd/MM/yyyy” is not supported by the default language settings.īut, if we pass “AR-LB” as culture (Arabic – Lebanon), where “dd/MM/yyyy” is supported, the conversion succeeds: If the culture info is not specified, PARSE() acts similar to CAST() function, but when the culture is passed within the expression, the function tries to convert the value to the desired data type using this culture.
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