At first sight, it seems that this is impossible with FTS5, as you cannot declare anything other than variable names and tokenization (and UNINDEXED).
However, this is easily solved by
- Declare two tables, one for standard table, another for FTS5
- Insert into the standard table first
- Use a non-standard UPDATE statement
INSERT INTO extra_q (id, chinese, pinyin, english, [type], description, tag) SELECT @id, @chinese, @pinyin, @english, @type, @description, @tag WHERE EXISTS (SELECT 1 FROM extra WHERE id = @id)
You should get an idea of how you can fit into your customization.
Of course, using only one table is possible too, but it might be harder to INTEGRITY_CHECK or clean invalids / duplicates.