Add a view-like public function to commondata #136

common-data/metadata.sql

@@ -0,0 +1,42 @@
+CREATE FUNCTION public.metadata()
+  RETURNS TABLE(
+    name text,
+    tabname text,
+    description text,
+    source text,
+    license text,
+    geometry_types text,
+    rows real,
+    size bigint,
+    created_at timestamp with time zone,
+    updated_at timestamp with time zone,
+    category text,
+    image_url text)
+  AS $$
+    SELECT
+      meta_dataset.name,
+      meta_dataset.tabname,
+      meta_dataset.description,
+      meta_dataset.source,
+      meta_dataset.license,
+      meta_dataset.geometry_types,
+      (
+          SELECT reltuples
+          FROM pg_class C LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)
+          WHERE
+              nspname NOT IN ('pg_catalog', 'information_schema')
+              AND relkind='r'
+              AND relname = meta_dataset.tabname
+      ) as rows,
+      pg_relation_size(meta_dataset.tabname) size,
+      meta_dataset.created_at,
+      meta_dataset.updated_at,
+      meta_category.name category,
+      meta_category.image_url category_image_url
+    FROM meta_dataset, meta_category
+    WHERE meta_dataset.meta_category_id = meta_category.cartodb_id;
+$$ LANGUAGE SQL;
+
+GRANT SELECT ON TABLE meta_dataset TO publicuser;
+GRANT SELECT ON TABLE meta_category TO publicuser;
+GRANT EXECUTE ON FUNCTION metadata() TO publicuser;