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Back to being a hypertable

This commit is contained in:
projectmoon 2024-04-11 00:05:43 +02:00
parent b4da3350db
commit 678374dfea
1 changed files with 20 additions and 0 deletions
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supabase/migrations/20240410220437_restore-hypertable.sql Normal file
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-- we areno longer using trigger.dev for sanity checking positions in
-- a reatime manner, so restore the hypertable.
delete from raw_bus_positions where id in (select raw_pos_id from potential_arrivals);
drop table potential_arrivals cascade;
CREATE TABLE potential_arrivals(
id BIGINT GENERATED ALWAYS AS IDENTITY,
raw_pos_id BIGINT NOT NULL,
bus_id text NOT NULL,
bus_coords GEOGRAPHY(Point, 4326) NOT NULL,
measured_at TIMESTAMP WITH TIME ZONE NOT NULL,
stop_id bigint NOT NULL,
distance decimal NOT NULL
);
SELECT create_hypertable('potential_arrivals', 'measured_at', chunk_time_interval => INTERVAL '10 minutes');
CREATE INDEX potential_arrives_raw_pos_id ON potential_arrivals (raw_pos_id);
CREATE INDEX potential_arrivals_measures ON potential_arrivals (bus_id, measured_at DESC);
CREATE INDEX potential_arrivals_spatial ON potential_arrivals USING GIST (bus_coords);