short Rollback()
Description
This function cancels any changes made in the current unit of work, ends the current unit of work, closes any open cursors, and invalidates all outstanding query IDs.
Return Value
Return value will be zero if successful or non-zero if unsucessful. If the return value is non-zero, you can call GetLastErrorString(), GetLastErrorType(), GetLastSQLCode(), GetLastSQLError(), or GetLastSQLState() to get additional error information.
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