queries and migrations

queries/berresheim.sql

@@ -0,0 +1,8 @@
+create or replace view level_v as
+  select time, 
+         cast(values->'CorrectedDistance'->>'value' as float) as level,
+         cast(values->'Battery'->>'value' as float) as battery,
+         attributes->>'Status' as status,
+         device
+    from measurements
+    where application = 'de-hottis-level-monitoring';