Remove superfluous joins from errata view

schema/spacewalk/common/views/suseServerChannelsRetractedPackagesView.sql

@@ -4,14 +4,12 @@
 --
 
 CREATE OR REPLACE VIEW suseServerChannelsRetractedPackagesView AS
- SELECT DISTINCT p.id AS pid,
-    s.id AS sid
-   FROM rhnserver s
-     JOIN rhnserverchannel sc ON s.id = sc.server_id
+ SELECT DISTINCT ep.package_id AS pid,
+    sc.server_id AS sid
+   FROM rhnserverchannel sc
      JOIN rhnchannel c ON c.id = sc.channel_id
      JOIN rhnchannelerrata ce ON ce.channel_id = c.id
      JOIN rhnerrata e ON e.id = ce.errata_id
      JOIN rhnerratapackage ep ON ep.errata_id = e.id
-     JOIN rhnpackage p ON p.id = ep.package_id
   WHERE e.advisory_status::text = 'retracted'::text;
 

schema/spacewalk/susemanager-schema.changes.oholecek.errata-optimizations

@@ -0,0 +1 @@
+- remove superfluous joins from errata view

schema/spacewalk/upgrade/susemanager-schema-5.1.0-to-susemanager-schema-5.1.1/002-errata-view-optimization.sql

@@ -0,0 +1,9 @@
+CREATE OR REPLACE VIEW suseServerChannelsRetractedPackagesView AS
+SELECT DISTINCT ep.package_id AS pid,
+   sc.server_id AS sid
+   FROM rhnserverchannel sc
+      JOIN rhnchannel c ON c.id = sc.channel_id
+      JOIN rhnchannelerrata ce ON ce.channel_id = c.id
+      JOIN rhnerrata e ON e.id = ce.errata_id
+      JOIN rhnerratapackage ep ON ep.errata_id = e.id
+   WHERE e.advisory_status::text = 'retracted'::text;