add more db inits

db/postgres/init.sql

@@ -1,3 +1,6 @@
+CREATE DATABASE demo;
+\c demo;
+
 -- a single table is used for all events in the cqrs system
 CREATE TABLE events
 (
@@ -21,8 +24,6 @@ ENCRYPTED PASSWORD
 GRANT
     ALL PRIVILEGES
 ON TABLE
-    events,
-    snapshots,
-    queries
+    events
 TO
     demo_user;