70 lines
2.6 KiB
PL/PgSQL
70 lines
2.6 KiB
PL/PgSQL
create table if not exists training(
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id uuid primary key default gen_random_uuid(),
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owner varchar(255) not null,
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filename text not null,
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type varchar(255) not null,
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description text not null,
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moving_time float not null,
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stopped_time float not null,
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moving_distance float not null,
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stopped_distance float not null,
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data jsonb not null default '{}'
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);
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create table if not exists training_data(
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training_id uuid not null,
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t timestamp with time zone not null,
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geog GEOGRAPHY(Point) not null, -- perf issues but don't care enough for geometry->projection->geography conversions
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speed float,
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elevation float not null,
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constraint fk_training_id foreign key(training_id) references training(id) on delete cascade
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);
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create index if not exists idx_training_data_t on training_data(t);
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create index if not exists idx_training_data_training_id on training_data(training_id);
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create index if not exists idx_training_data_geog on training_data using GIST(geog);
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create or replace function resolve_geo_location(geography) returns text as $$
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begin
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case when st_dwithin($1, st_point(45.516114, 9.216108), 1000) then
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return 'Bicocca';
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when st_dwithin($1, st_point(45.058302, 11.644477), 2000) then
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return 'Villanova';
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when st_dwithin($1, st_point(45.106055, 11.794563), 2000) then
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return 'Boara';
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when st_dwithin($1, st_point(45.610874, 9.522227), 2000) then
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return 'Trezzo sull` Adda';
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when st_dwithin($1, st_point(45.645741, 9.265780), 2000) then
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return 'Sovico';
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when st_dwithin($1, st_point(45.588173, 9.275549), 3000) then
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return 'Monza';
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else
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return 'unknown';
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end case;
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end
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$$ language plpgsql immutable;
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create or replace view training_info as
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(
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select
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td_start.training_id as training_id,
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td_start.t as start_time,
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td_end.t as end_time,
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resolve_geo_location(td_start.geog) AS start_location,
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resolve_geo_location(td_end.geog) AS end_location,
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date_trunc('second'::text, td_end.t - td_start.t) AS duration,
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round(((t.moving_distance)/1000)::numeric, 2) as distance,
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round(( (t.moving_distance / 1000) / (select extract(epoch from date_trunc('second'::text, td_end.t - td_start.t))/3600))::numeric, 1) as pace_kmh
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from
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(
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select distinct on (td2.training_id) *
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from training_data td2 order by td2.training_id, t asc
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) td_start
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join
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(
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select distinct on (td2.training_id) *
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from training_data td2 order by td2.training_id, t desc
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) td_end
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on (td_start.training_id = td_end.training_id)
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join training t on (t.id = td_start.training_id)
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order by td_start.t asc
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); |