Simplify postgres_indexes view

db/migrate/20210706152139_add_index_type_to_postgres_indexes_view.rb

@@ -24,8 +24,7 @@ class AddIndexTypeToPostgresIndexesView < ActiveRecord::Migration[6.1]
         JOIN pg_class i ON i.oid = pg_index.indexrelid
         JOIN pg_namespace ON i.relnamespace = pg_namespace.oid
         JOIN pg_indexes ON i.relname = pg_indexes.indexname
-        LEFT JOIN pg_class t ON t.oid = pg_index.indrelid
-        LEFT JOIN pg_am a ON i.relam = a.oid
+        JOIN pg_am a ON i.relam = a.oid
       WHERE pg_namespace.nspname <> 'pg_catalog'::name AND (pg_namespace.nspname = ANY (ARRAY["current_schema"(), 'gitlab_partitions_dynamic'::name, 'gitlab_partitions_static'::name]));
     SQL
   end

db/structure.sql

@@ -16597,12 +16597,11 @@ CREATE VIEW postgres_indexes AS
     (pg_index.indpred IS NOT NULL) AS partial,
     pg_indexes.indexdef AS definition,
     pg_relation_size((i.oid)::regclass) AS ondisk_size_bytes
-   FROM (((((pg_index
+   FROM ((((pg_index
      JOIN pg_class i ON ((i.oid = pg_index.indexrelid)))
      JOIN pg_namespace ON ((i.relnamespace = pg_namespace.oid)))
      JOIN pg_indexes ON ((i.relname = pg_indexes.indexname)))
-     LEFT JOIN pg_class t ON ((t.oid = pg_index.indrelid)))
-     LEFT JOIN pg_am a ON ((i.relam = a.oid)))
+     JOIN pg_am a ON ((i.relam = a.oid)))
   WHERE ((pg_namespace.nspname <> 'pg_catalog'::name) AND (pg_namespace.nspname = ANY (ARRAY["current_schema"(), 'gitlab_partitions_dynamic'::name, 'gitlab_partitions_static'::name])));
 
 CREATE VIEW postgres_partitioned_tables AS