#42 find total obs for each link_dir

congestion_data_aggregation/create-mview-linkdir_obs.sql

@@ -0,0 +1,24 @@
+CREATE MATERIALIZED ViEW congestion.linkdir_obs AS
+
+SELECT ROW_NUMBER() OVER (ORDER BY SUM(day_count) DESC) AS priority, 
+link_dir, SUM(day_count) AS total_count
+FROM 
+(
+SELECT link_dir, COUNT(DISTINCT tx::date) AS day_count, (datetime_bin(tx,30))::time AS time_bin
+FROM congestion.data_fall2019_5min 
+INNER JOIN congestion.routing_grid USING (link_dir)
+GROUP BY link_dir, time_bin
+) a
+GROUP BY link_dir
+
+
+--this query is muchhhh slower
+WITH X AS (
+SELECT link_dir, COUNT(DISTINCT tx::date) AS day_count, (datetime_bin(tx,30))::time AS time_bin
+FROM congestion.data_fall2019_5min 
+INNER JOIN congestion.segment_link_test USING (link_dir)
+GROUP BY link_dir, time_bin
+)
+SELECT ROW_NUMBER() OVER (ORDER BY SUM(day_count) DESC) AS priority, link_dir, sum(day_count) AS total_count
+FROM X
+GROUP BY link_dir