-- -- Database upgrade to add FTS tokenize virtual table, which allows for querying the tokenizer -- directly for stemmed words, and dropping the stemmed FTS table for an unstemmed one. We now -- use the stemmer manually to generate search queries. -- DROP TABLE MessageSearchTable; CREATE VIRTUAL TABLE MessageSearchTable USING fts4( body, attachment, subject, from_field, receivers, cc, bcc, tokenize=simple, prefix="2,4,6,8,10" );