postgres
diff --git a/‎src/backend/tcop/utility.c
Copy file name to clipboardExpand all lines: src/backend/tcop/utility.c
+17-6Lines changed: 17 additions & 6 deletions b/‎src/backend/tcop/utility.c
Copy file name to clipboardExpand all lines: src/backend/tcop/utility.c
+17-6Lines changed: 17 additions & 6 deletions
diff --git a/‎src/test/regress/expected/create_table_like.out
Copy file name to clipboardExpand all lines: src/test/regress/expected/create_table_like.out
+16Lines changed: 16 additions & 0 deletions b/‎src/test/regress/expected/create_table_like.out
Copy file name to clipboardExpand all lines: src/test/regress/expected/create_table_like.out
+16Lines changed: 16 additions & 0 deletions
diff --git a/‎src/test/regress/sql/create_table_like.sql
Copy file name to clipboardExpand all lines: src/test/regress/sql/create_table_like.sql
+5Lines changed: 5 additions & 0 deletions b/‎src/test/regress/sql/create_table_like.sql
Copy file name to clipboardExpand all lines: src/test/regress/sql/create_table_like.sql
+5Lines changed: 5 additions & 0 deletions
@@ -964,6 +964,7 @@ ProcessUtilitySlow(Node *parsetree,
 				{
 					List	   *stmts;
 					ListCell   *l;
+					RangeVar   *table_rv = NULL;
 
 					/* Run parse analysis ... */
 					stmts = transformCreateStmt((CreateStmt *) parsetree,
@@ -976,11 +977,15 @@ ProcessUtilitySlow(Node *parsetree,
 
 						if (IsA(stmt, CreateStmt))
 						{
+							CreateStmt *cstmt = (CreateStmt *) stmt;
 							Datum		toast_options;
 							static char *validnsps[] = HEAP_RELOPT_NAMESPACES;
 
+							/* Remember transformed RangeVar for LIKE */
+							table_rv = cstmt->relation;
+
 							/* Create the table itself */
-							address = DefineRelation((CreateStmt *) stmt,
+							address = DefineRelation(cstmt,
 													 RELKIND_RELATION,
 													 InvalidOid, NULL);
 							EventTriggerCollectSimpleCommand(address,
@@ -998,7 +1003,7 @@ ProcessUtilitySlow(Node *parsetree,
 							 * table
 							 */
 							toast_options = transformRelOptions((Datum) 0,
-											  ((CreateStmt *) stmt)->options,
+																cstmt->options,
 																"toast",
 																validnsps,
 																true,
@@ -1012,11 +1017,16 @@ ProcessUtilitySlow(Node *parsetree,
 						}
 						else if (IsA(stmt, CreateForeignTableStmt))
 						{
+							CreateForeignTableStmt *cstmt = (CreateForeignTableStmt *) stmt;
+
+							/* Remember transformed RangeVar for LIKE */
+							table_rv = cstmt->base.relation;
+
 							/* Create the table itself */
-							address = DefineRelation((CreateStmt *) stmt,
+							address = DefineRelation(&cstmt->base,
 													 RELKIND_FOREIGN_TABLE,
 													 InvalidOid, NULL);
-							CreateForeignTable((CreateForeignTableStmt *) stmt,
+							CreateForeignTable(cstmt,
 											   address.objectId);
 							EventTriggerCollectSimpleCommand(address,
 															 secondaryObject,
@@ -1031,10 +1041,11 @@ ProcessUtilitySlow(Node *parsetree,
 							 * to-do list.
 							 */
 							TableLikeClause *like = (TableLikeClause *) stmt;
-							RangeVar   *rv = ((CreateStmt *) parsetree)->relation;
 							List	   *morestmts;
 
-							morestmts = expandTableLikeClause(rv, like);
+							Assert(table_rv != NULL);
+
+							morestmts = expandTableLikeClause(table_rv, like);
 							stmts = list_concat(stmts, morestmts);
 
 							/*
 
@@ -243,6 +243,22 @@ CREATE TABLE inh_error2 (LIKE ctlt4 INCLUDING STORAGE) INHERITS (ctlt1);
 NOTICE:  merging column "a" with inherited definition
 ERROR:  column "a" has a storage parameter conflict
 DETAIL:  MAIN versus EXTENDED
+-- Check that LIKE isn't confused by a system catalog of the same name
+CREATE TABLE pg_attrdef (LIKE ctlt1 INCLUDING ALL);
+\d+ public.pg_attrdef
+                     Table "public.pg_attrdef"
+ Column | Type | Modifiers | Storage  | Stats target | Description 
+--------+------+-----------+----------+--------------+-------------
+ a      | text | not null  | main     |              | A
+ b      | text |           | extended |              | B
+Indexes:
+    "pg_attrdef_pkey" PRIMARY KEY, btree (a)
+    "pg_attrdef_b_idx" btree (b)
+    "pg_attrdef_expr_idx" btree ((a || b))
+Check constraints:
+    "ctlt1_a_check" CHECK (length(a) > 2)
+
+DROP TABLE public.pg_attrdef;
 DROP TABLE ctlt1, ctlt2, ctlt3, ctlt4, ctlt12_storage, ctlt12_comments, ctlt1_inh, ctlt13_inh, ctlt13_like, ctlt_all, ctla, ctlb CASCADE;
 NOTICE:  drop cascades to table inhe
 /* LIKE with other relation kinds */
 
@@ -112,6 +112,11 @@ SELECT c.relname, objsubid, description FROM pg_description, pg_index i, pg_clas
 CREATE TABLE inh_error1 () INHERITS (ctlt1, ctlt4);
 CREATE TABLE inh_error2 (LIKE ctlt4 INCLUDING STORAGE) INHERITS (ctlt1);
 
+-- Check that LIKE isn't confused by a system catalog of the same name
+CREATE TABLE pg_attrdef (LIKE ctlt1 INCLUDING ALL);
+\d+ public.pg_attrdef
+DROP TABLE public.pg_attrdef;
+
 DROP TABLE ctlt1, ctlt2, ctlt3, ctlt4, ctlt12_storage, ctlt12_comments, ctlt1_inh, ctlt13_inh, ctlt13_like, ctlt_all, ctla, ctlb CASCADE;