improve support for ONLY in select, insert, delete etc

Author: funbringer

Makefile

@@ -7,7 +7,7 @@ OBJS = src/init.o src/relation_info.o src/utils.o src/partition_filter.o \
 	src/pl_funcs.o src/pl_range_funcs.o src/pl_hash_funcs.o src/pathman_workers.o \
 	src/hooks.o src/nodes_common.o src/xact_handling.o src/utility_stmt_hooking.o \
 	src/planner_tree_modification.o src/debug_print.o src/partition_creation.o \
-	src/compat/pg_compat.o src/compat/relation_tags.o src/compat/rowmarks_fix.o \
+	src/compat/pg_compat.o src/compat/rowmarks_fix.o \
 	$(WIN32RES)
 
 ifdef USE_PGXS

expected/pathman_only.out

@@ -137,7 +137,34 @@ UNION SELECT * FROM test_only.from_only_test;
 EXPLAIN (COSTS OFF)
 SELECT * FROM test_only.from_only_test a
 JOIN ONLY test_only.from_only_test b USING(val);
-ERROR:  it is prohibited to apply ONLY modifier to partitioned tables which have already been mentioned without ONLY
+                 QUERY PLAN                  
+---------------------------------------------
+ Nested Loop
+   ->  Seq Scan on from_only_test b
+   ->  Custom Scan (RuntimeAppend)
+         Prune by: (b.val = a.val)
+         ->  Seq Scan on from_only_test_1 a
+               Filter: (b.val = val)
+         ->  Seq Scan on from_only_test_2 a
+               Filter: (b.val = val)
+         ->  Seq Scan on from_only_test_3 a
+               Filter: (b.val = val)
+         ->  Seq Scan on from_only_test_4 a
+               Filter: (b.val = val)
+         ->  Seq Scan on from_only_test_5 a
+               Filter: (b.val = val)
+         ->  Seq Scan on from_only_test_6 a
+               Filter: (b.val = val)
+         ->  Seq Scan on from_only_test_7 a
+               Filter: (b.val = val)
+         ->  Seq Scan on from_only_test_8 a
+               Filter: (b.val = val)
+         ->  Seq Scan on from_only_test_9 a
+               Filter: (b.val = val)
+         ->  Seq Scan on from_only_test_10 a
+               Filter: (b.val = val)
+(24 rows)
+
 /* should be OK */
 EXPLAIN (COSTS OFF)
 WITH q1 AS (SELECT * FROM test_only.from_only_test),