Need to tweak my FTS4 SQLite query

Question

The query below doesn't work on Android and throws the following exception

Unable to use function MATCH in the requested context

It is a pretty complicated query so I'm looking into ways of simplifying it. For info, this query works on the same database on my computer with the sqlite-jdbc-3.715 driver

SELECT * FROM stop_times WHERE 
    departure_time  >= 1000-125
    AND 
    departure_time <= 1000+180 
    AND stop_id IN 
        (SELECT _id FROM stop_sequences WHERE stop_ids MATCH '"642," OR "642," OR ",642"')
    AND _id IN 
        (SELECT _id FROM trips WHERE service_id IN (SELECT _id FROM calendar WHERE wednesday=1))
ORDER BY departure_time ASC

I think my FTS table declaration is OK:

CREATE VIRTUAL TABLE stop_sequences USING fts4(
    _id INTEGER PRIMARY KEY,
    stop_ids TEXT
);

Could an SQL guru help me out? Thanks

EDIT: I found out that even the simplest query such as

SELECT _id FROM stop_sequences WHERE stop_ids MATCH '"642";

fails with the same error. I already use MATCH statements on another database somewhere else in my code and it doesn't complain at all. Does the context mentionned in the error message has anything to do with Android's Context?

Answer 1

When you created this table, you specified USING fts4(), right? If not, you're full-text queries will not work at all.

Answer 2

You can try to change query with union

SELECT * FROM stop_times WHERE 
    departure_time  >= 1000-125
    AND 
    departure_time <= 1000+180 
    AND stop_id IN 
        (SELECT _id FROM stop_sequences 
         WHERE stop_ids 
         MATCH '"642,"'
         UNION
         SELECT _id FROM stop_sequences 
         WHERE stop_ids 
         MATCH '",642"'
         )
    AND _id IN 
        (SELECT _id FROM trips WHERE service_id IN (SELECT _id FROM calendar WHERE wednesday=1))
ORDER BY departure_time ASC