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 macOS |
|---|---|---|---|
| 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 (UTF16) character string | Unicode (UTF8) character string | Unicode (UTF32) 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 ODBC Driver for Teradata. ODBC Driver for Teradata converts the character string to or from the session character set when required. For more information, see Conversion and Error Handling.