17.20 - UTF8 Pass Through Functionality - ODBC Driver for Teradata

ODBC Driver for Teradata® User Guide

ODBC Driver for Teradata
Release Number
June 2022
English (United States)
Last Update
Some existing Unicode applications on Windows have been using the UTF8 encoding of Unicode to be able to pass Unicode data through to the database using ODBC ANSI function calls. These applications utilize the UTF8 session character set. They will face the following issues with the Unicode driver:
  • Supplying Latin or Kanji object names through the ANSI API will fail because the Driver Manager cannot translate to UTF-16 using the application code page as the string will contain invalid characters. For example, working on a Japanese PC, the Driver Manager will attempt to convert UTF8 characters thinking it is SJIS.
  • Supplying Latin or Kanji data in the SQL request, for example: “INTO T values …” will fail because the Driver Manager cannot translate to UTF16 using the application code page.
  • Character data of type SQL_C_CHAR. The new driver will convert data to and from the UTF-8 session character set using the applications code page. This will fail for non-ASCII characters.

Therefore, supplying and retrieving UTF8 data using SQL_C_CHAR data binding is not supported.