Dostats issue with functional index

Hi All, I have been having a problem with dostats where I can't use it on a particular table: informix@server:~> dostats -d dbname -t tablename Working on database: dbname. tablename(MEDIUM)...SUCCESSFUL (HIGH)... Cannot Update statistics for table: tablename, column ; SQLCODE = -201, ISAM = 0, POS = 44 UPDATE STATISTICS HIGH FOR TABLE tablename (); It turns out that the problem is that there is a functional index on this table on one of the varchar columns in this table: create index "informix".upper_name on "informix".tablename ("informix" .toupper(name)) using btree ; CREATE FUNCTION "informix".toupper (instring varchar(255)) RETURNING varchar(255) WITH (not variant); RETURN upper(instring); END FUNCTION ; Any ideas, other than dropping and recreating the index before and after using dostats? Ben.