Hi, I am new to PostgreSQL and have a question about the new jsonb type in 9.4. Suppose I have a table called "user" that has two columns: (1) "user_id" of type text, also the primary key, (2) "setting" of type jsonb. With the following query pattern:
SELECT * FROM user WHERE user_id IN [...] ORDER BY setting->>'foo', setting->>'bar', ... where ORDER BY clause can contain an arbitrary list of root-level fields in "setting". In this case, how should I create indexes for "user" to get good query performance? Thanks, Pai-Hung