Oh, some more fun: a RowExpr that's labeled with a named composite type
(rather than RECORD) has the same issue of not respecting aliases.
Continuing previous example with table "foo":

regression=# create view vv as select * from foo;
CREATE VIEW
regression=# select row_to_json(q) from vv q;
   row_to_json   
-----------------
 {"f1":1,"f2":2}
(1 row)

regression=# select row_to_json(q) from vv q(a,b);
   row_to_json   
-----------------
 {"f1":1,"f2":2}
(1 row)

So that's another case we probably want to change in HEAD but not the back
branches.

                        regards, tom lane


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