push weather

database/migrations/add_unique_constraint_weather_data.sql

@@ -0,0 +1,18 @@
+-- Ensure weather_data upsert works by providing a unique index
+-- Safe to run multiple times
+DO $$
+BEGIN
+  IF EXISTS (
+    SELECT 1 FROM pg_indexes 
+    WHERE schemaname = 'public' AND indexname = 'idx_weather_data_property_date'
+  ) THEN
+    DROP INDEX IF EXISTS idx_weather_data_property_date;
+  END IF;
+EXCEPTION WHEN undefined_table THEN
+  -- table may not exist yet in some environments; ignore
+  NULL;
+END $$;
+
+CREATE UNIQUE INDEX IF NOT EXISTS ux_weather_data_property_date
+  ON weather_data(property_id, date);
+