speed up stats_active_trips_by_hour creation ⚡️

public-transport · Apr 9, 2024 · 6f8c66a · 6f8c66a
1 parent 1a488aa
commit 6f8c66a
Showing 1 changed file with 8 additions and 16 deletions.
diff --git a/lib/stats_active_trips_by_hour.js b/lib/stats_active_trips_by_hour.js
@@ -33,32 +33,24 @@ WITH
 		FROM dates, date_offset 
 	),
 	min_dep AS (
-		SELECT t_departure AS t
+		SELECT min("t_departure") AS t
 		FROM "${opt.schema}".arrivals_departures, date_min_max
-		WHERE date <= date_min_max.min
-		ORDER BY t_departure ASC
-		LIMIT 1
+		WHERE date <= (SELECT min FROM date_min_max)
 	),
 	min_arr AS (
-		SELECT t_arrival AS t
+		SELECT min("t_arrival") AS t
 		FROM "${opt.schema}".arrivals_departures, date_min_max
-		WHERE date <= date_min_max.min
-		ORDER BY t_arrival ASC
-		LIMIT 1
+		WHERE date <= (SELECT min FROM date_min_max)
 	),
 	max_dep AS (
-		SELECT t_departure AS t
+		SELECT min("t_departure") AS t
 		FROM "${opt.schema}".arrivals_departures, date_min_max
-		WHERE date >= date_min_max.max
-		ORDER BY t_departure DESC
-		LIMIT 1
+		WHERE date >= (SELECT max FROM date_min_max)
 	),
 	max_arr AS (
-		SELECT t_arrival AS t
+		SELECT min("t_arrival") AS t
 		FROM "${opt.schema}".arrivals_departures, date_min_max
-		WHERE date >= date_min_max.max
-		ORDER BY t_arrival DESC
-		LIMIT 1
+		WHERE date >= (SELECT max FROM date_min_max)
 	)
 SELECT
 	least(min_dep.t, min_arr.t) as min,