PGPRO-7975: [WIP] fix pg_pathman tests

  Caused by:
  - 2489d76c4906f4461a364ca8ad7e0751ead8aa0d (PostgreSQL)
  Make Vars be outer-join-aware.
 - 8109191 (pg_pathman)
 fix bogus varno in PartitionFilter's targetlist (issue #112)
  - 92f0734 (pg_pathman)
  [PGPRO-7630] Post-processing for nodes added in plan tree by pathman
   PGPRO-5628: Port pg_proaudit to STD15
Tags: pg_pathman

Author: antamel

expected/pathman_column_type_1.out

@@ -39,15 +39,15 @@ CREATE FUNCTION get_cached_partition_cooked_key(REGCLASS)
 RETURNS TEXT AS 'pg_pathman', 'get_cached_partition_cooked_key_pl'
 LANGUAGE C STRICT;
 SELECT get_partition_cooked_key('test_column_type.test'::REGCLASS);
-                                                get_partition_cooked_key                                                 
--------------------------------------------------------------------------------------------------------------------------
- {VAR :varno 1 :varattno 1 :vartype 23 :vartypmod -1 :varcollid 0 :varlevelsup 0 :varnosyn 1 :varattnosyn 1 :location 8}
+                                                          get_partition_cooked_key                                                           
+---------------------------------------------------------------------------------------------------------------------------------------------
+ {VAR :varno 1 :varattno 1 :vartype 23 :vartypmod -1 :varcollid 0 :varnullingrels (b) :varlevelsup 0 :varnosyn 1 :varattnosyn 1 :location 8}
 (1 row)
 
 SELECT get_cached_partition_cooked_key('test_column_type.test'::REGCLASS);
-                                             get_cached_partition_cooked_key                                             
--------------------------------------------------------------------------------------------------------------------------
- {VAR :varno 1 :varattno 1 :vartype 23 :vartypmod -1 :varcollid 0 :varlevelsup 0 :varnosyn 1 :varattnosyn 1 :location 8}
+                                                       get_cached_partition_cooked_key                                                       
+---------------------------------------------------------------------------------------------------------------------------------------------
+ {VAR :varno 1 :varattno 1 :vartype 23 :vartypmod -1 :varcollid 0 :varnullingrels (b) :varlevelsup 0 :varnosyn 1 :varattnosyn 1 :location 8}
 (1 row)
 
 SELECT get_partition_key_type('test_column_type.test'::REGCLASS);
@@ -66,15 +66,15 @@ SELECT get_partition_key_type('test_column_type.test'::REGCLASS);
 (1 row)
 
 SELECT get_partition_cooked_key('test_column_type.test'::REGCLASS);
-                                                 get_partition_cooked_key                                                  
----------------------------------------------------------------------------------------------------------------------------
- {VAR :varno 1 :varattno 1 :vartype 1700 :vartypmod -1 :varcollid 0 :varlevelsup 0 :varnosyn 1 :varattnosyn 1 :location 8}
+                                                           get_partition_cooked_key                                                            
+-----------------------------------------------------------------------------------------------------------------------------------------------
+ {VAR :varno 1 :varattno 1 :vartype 1700 :vartypmod -1 :varcollid 0 :varnullingrels (b) :varlevelsup 0 :varnosyn 1 :varattnosyn 1 :location 8}
 (1 row)
 
 SELECT get_cached_partition_cooked_key('test_column_type.test'::REGCLASS);
-                                              get_cached_partition_cooked_key                                              
----------------------------------------------------------------------------------------------------------------------------
- {VAR :varno 1 :varattno 1 :vartype 1700 :vartypmod -1 :varcollid 0 :varlevelsup 0 :varnosyn 1 :varattnosyn 1 :location 8}
+                                                        get_cached_partition_cooked_key                                                        
+-----------------------------------------------------------------------------------------------------------------------------------------------
+ {VAR :varno 1 :varattno 1 :vartype 1700 :vartypmod -1 :varcollid 0 :varnullingrels (b) :varlevelsup 0 :varnosyn 1 :varattnosyn 1 :location 8}
 (1 row)
 
 DROP FUNCTION get_cached_partition_cooked_key(REGCLASS);

expected/pathman_join_clause_4.out

@@ -103,16 +103,15 @@ EXPLAIN (COSTS OFF) SELECT * FROM test.parent
 LEFT JOIN test.child ON test.child.parent_id = test.parent.id AND
 						test.child.owner_id = test.parent.owner_id
 WHERE test.parent.owner_id = 3 and test.parent.id IN (3, 4);
-                                             QUERY PLAN                                              
------------------------------------------------------------------------------------------------------
+                              QUERY PLAN                              
+----------------------------------------------------------------------
  Nested Loop Left Join
+   Join Filter: (child.parent_id = parent.id)
    ->  Seq Scan on parent
          Filter: ((id = ANY ('{3,4}'::integer[])) AND (owner_id = 3))
-   ->  Custom Scan (RuntimeAppend)
-         Prune by: ((child.owner_id = 3) AND (child.owner_id = parent.owner_id))
-         ->  Seq Scan on child_1 child
-               Filter: ((owner_id = 3) AND (owner_id = parent.owner_id) AND (parent_id = parent.id))
-(7 rows)
+   ->  Seq Scan on child_1 child
+         Filter: (owner_id = 3)
+(6 rows)
 
 SELECT * FROM test.parent
 LEFT JOIN test.child ON test.child.parent_id = test.parent.id AND