Hi,
While reviewing sql_features.txt, found a few items marked NO ('Not supported') whereas, at the outset, they seemed to be supported. Apologies, if this is already considered and / or still marked 'NO' for a reason, but a list of such items mentioned below:
F202 TRUNCATE TABLE: identity column restart option NO
F263 Comma-separated predicates in simple CASE expression NO
T041 Basic LOB data type support 01 BLOB data type NO
T051 Row types NO
T174 Identity columns NO
T176 Sequence generator support NO
T177 Sequence generator support: simple restart option NO
T522 Default values for IN parameters of SQL-invoked procedures NO
T571 Array-returning external SQL-invoked functions NO