Constraint's NO INHERIT option is ignored in CREATE TABLE LIKE statement

[Ildar Musin]

Hi hackers,

My colleague Chris Travers discovered something that looks like a bug.
Let's say we have a table with a constraint that is declared as NO INHERIT.

CREATE TABLE test (
    x INT CHECK (x > 0) NO INHERIT
);
\d test
                Table "public.test"
 Column |  Type   | Collation | Nullable | Default
--------+---------+-----------+----------+---------
 x      | integer |           |          |
Check constraints:
    "test_x_check1" CHECK (x > 0) NO INHERIT

Now when we want to make a copy of the table structure into a new table
the `NO INHERIT` option is ignored.

CREATE TABLE test2 (LIKE test INCLUDING CONSTRAINTS);
\d test2
               Table "public.test2"
 Column |  Type   | Collation | Nullable | Default
--------+---------+-----------+----------+---------
 x      | integer |           |          |
Check constraints:
    "test_x_check1" CHECK (x > 0)

Is this a bug or expected behaviour? Just in case I've attached a patch
that fixes this.

Regards,
Ildar

diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 2406ca7a5d..d75ec6766a 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -1154,6 +1154,7 @@ transformTableLikeClause(CreateStmtContext *cxt, TableLikeClause *table_like_cla
 			n->contype = CONSTR_CHECK;
 			n->location = -1;
 			n->conname = pstrdup(ccname);
+			n->is_no_inherit = tupleDesc->constr->check[ccnum].ccnoinherit;
 			n->raw_expr = NULL;
 			n->cooked_expr = nodeToString(ccbin_node);
 			cxt->ckconstraints = lappend(cxt->ckconstraints, n);