PW-773 Convert v_categorytree into a materialized view

2017-04-25 09:20:27 +02:00
parent 722455555d
commit e80396eb09
1 changed files with 63 additions and 0 deletions
@@ -0,0 +1,63 @@
+-- Materialized View: public.v_categorytree
+DO $$
+    BEGIN
+    	  DROP MATERIALIZED VIEW IF EXISTS public.v_categorytree;
+    EXCEPTION WHEN others THEN
+    	  RAISE NOTICE 'Materialized view does not exist';
+    END;
+$$;
+
+DO $$
+    BEGIN
+    	  DROP VIEW IF EXISTS public.v_categorytree;
+    EXCEPTION WHEN others THEN
+    	  RAISE NOTICE 'View does not exist';
+    END;
+$$;
+
+CREATE MATERIALIZED VIEW public.v_categorytree AS
+ SELECT c.id,
+    c.name,
+    ( SELECT array_to_string(array_agg(main.parent_name), '/'::text) AS path
+           FROM ( SELECT node.id,
+                    parent.name AS parent_name
+                   FROM categories node,
+                    categories parent
+                  WHERE node.lft >= parent.lft AND node.lft <= parent.rgt AND node.id = c.id
+                  ORDER BY parent.lft) main
+          GROUP BY main.id) AS path,
+    ( SELECT array_to_string(array_agg(main.parent_id), '/'::text) AS path
+           FROM ( SELECT node.id,
+                    parent.id AS parent_id
+                   FROM categories node,
+                    categories parent
+                  WHERE node.lft >= parent.lft AND node.lft <= parent.rgt AND node.id = c.id
+                  ORDER BY parent.lft) main
+          GROUP BY main.id) AS path_numeric,
+        CASE c.rgt - c.lft
+            WHEN 1 THEN 1
+            ELSE 0
+        END AS is_leaf,
+    ( SELECT count(*) - 1
+           FROM categories node,
+            categories parent
+          WHERE node.lft >= parent.lft AND node.lft <= parent.rgt AND node.id = c.id) AS depth,
+    ( SELECT count(*) - 1
+           FROM categories c1
+          WHERE c1.lft >= c.lft AND c1.lft <= c.rgt) AS child_count,
+    c.lft,
+    c.rgt
+   FROM categories c
+  ORDER BY c.lft
+WITH DATA;
+
+GRANT ALL ON TABLE v_categorytree TO photowall;
+
+-- Index: public.v_categorytree_key
+
+-- DROP INDEX public.v_categorytree_key;
+
+CREATE UNIQUE INDEX v_categorytree_key
+  ON public.v_categorytree
+  USING btree
+  (id);