ODBC Driver for Teradata conforms to ODBC 3.52 specifications and supports SQL_C_CHAR and SQL_C_WCHAR C data types as listed below:
| ODBC C Data Type | Windows Platform | UNIX Platforms | Apple OS X |
|---|---|---|---|
| SQL_C_CHAR | Character string encoded in the code page of the application (Windows application code page) |
Character string encoded in the code page of the application (ODBC application code page) |
Character string encoded in the code page of the application (current locale LC_TYPE category) |
| SQL_C_WCHAR | Unicode (UTF-16) character string | Unicode (UTF-8) character string | Unicode (UTF-32) character string |
An ODBC application can pass and retrieve character data encoded in the application code page (SQL_C_CHAR) or Unicode (SQL_C_WCHAR) character data to or from the ODBC driver. ODBC Driver for Teradata converts the character string to or from the session character set when required; see Conversion and Error Handling for additional information.