Для ODBC Вы можете установить пар-р Regional=yes (в DSN configuration , или в SQLConfigDataSource)
Respect client workstation settings for region when converting date, time, and currency values to character strings. This setting should only be specified for applications that only display data, not for applications that process data.
Note Regional conversion settings apply to currency, numeric, date, and time data types. The conversion setting is only applicable to output conversion and is only visible when currency, numeric, date, or time values are converted to character strings.


The driver uses the locale registry settings for the current user. The driver does not honor the current thread's locale if the application sets it after connection by, for example, calling SetThreadLocale.

Altering the regional behavior of a data source can cause application failure. An application that parses date strings, and expects date strings to appear as defined by ODBC, could be adversely affected by altering this value.
Соответственно, формат преобразования будет приведён в соответствие с Regional Settings (control panel). Меня это не устраивает, поскольку и числовые данные отображаются в соответствии с этими установками.