Merge pull request #177 from makerdao/update-all-delegates

update allDelegates query to include version

migrations/076-new-all-delegates.sql

@@ -0,0 +1,28 @@
+-- Drop existing functions
+DROP FUNCTION IF EXISTS dschief.all_delegates();
+DROP FUNCTION IF EXISTS api.all_delegates();
+
+CREATE OR REPLACE FUNCTION dschief.all_delegates()
+RETURNS TABLE (
+  delegate character varying(66),
+  vote_delegate character varying(66),
+  delegate_version int
+) AS $$
+SELECT delegate, vote_delegate, delegate_version
+FROM dschief.vote_delegate_created_event
+$$ LANGUAGE sql STABLE STRICT;
+
+
+--This query would be called by allDelegates() in the sdk
+CREATE OR REPLACE FUNCTION api.all_delegates()
+RETURNS TABLE (
+  delegate character varying(66),
+  vote_delegate character varying(66),
+  delegate_version int,
+  block_timestamp TIMESTAMP WITH TIME ZONE
+) AS $$
+SELECT delegate, vote_delegate, delegate_version, b.timestamp
+FROM dschief.vote_delegate_created_event d
+LEFT JOIN vulcan2x.block b
+ON d.block_id = b.id;
+$$ LANGUAGE sql STABLE STRICT;