How to Convert SQL Server 2008 DATETIMEOFFSET to DATETIME?

Converting Sql Server 2008 DATETIMEOFFSET to DATETIME

When working with databases, it is often necessary to convert data types to meet specific requirements. In this case, we explore how to transform a DATETIMEOFFSET field into a DATETIME field while adjusting for time zone differences.

The DATETIMEOFFSET data type in Sql Server 2008 incorporates both a date and time component with an offset representing the time zone difference. Converting this data type to DATETIME allows for straightforward date and time manipulation within the application's context.

To achieve this conversion, the following approach can be employed:

• Use CONVERT Function:

  The CONVERT function provides a straightforward method to convert DATETIMEOFFSET to DATETIME. The syntax for conversion using CONVERT is:

  CONVERT(datetime2, DATETIMEOFFSET_value, 1)

  By specifying a style parameter of 1, the result is a DATETIME value in UTC time zone.

• Convert to DATETIMEOFFSET with 00:00 Offset:

  Another approach involves converting the DATETIMEOFFSET value to DATETIMEOFFSET with a 00:00 offset. This effectively sets the time zone to UTC. Subsequently, the DATETIMEOFFSET value can be converted to DATETIME using CONVERT:

  CONVERT(datetime2, CONVERT(datetimeoffset, DATETIMEOFFSET_value))

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