introduce aggregated build status on release & start using it

Author: syphar

.sqlx/query-0f51891df12ccdbecbdffef1588695c7a88206171881f2d9951eb2f40125b244.json

@@ -0,0 +1 @@
+DROP VIEW release_build_status;

.sqlx/query-1379f2cb71474de2ce28373283210ecf32505d1dad95e7d05bc310e9deb47411.json

@@ -0,0 +1,22 @@
+CREATE OR REPLACE VIEW release_build_status AS (
+  SELECT 
+    summary.id,
+    summary.last_build_time,
+    CASE 
+      WHEN summary.success_count > 0 THEN 'success'::build_status
+      WHEN summary.failure_count > 0 THEN 'failure'::build_status
+      ELSE 'in_progress'::build_status
+    END as build_status
+      
+  FROM (
+    SELECT
+      r.id,
+      MAX(b.build_time) as last_build_time,
+      SUM(CASE WHEN b.build_status = 'success' THEN 1 ELSE 0 END) as success_count,
+      SUM(CASE WHEN b.build_status = 'failure' THEN 1 ELSE 0 END) as failure_count
+    FROM 
+      releases as r
+      LEFT OUTER JOIN builds AS b on b.rid = r.id 
+    GROUP BY r.id
+  ) as summary
+);