Sybase IQ text configuration objects and TEXT indexes using external libraries have these limitations:
For TEXT indexes on binary columns, you must use external libraries provided by external vendors for document conversion. Sybase IQ does not implicitly convert documents stored in binary columns.
N-gram based text searches are not supported if an external term-breaker is used to tokenize the document.
You cannot use external libraries to create TEXT indexes on SQL Anywhere tables; doing so results in an error.