Re: [HACKERS] mysql_fdw + PG10: unrecognized node type: 217

Re: To Tom Lane 2017-09-11 <20170911083136.stdnc4w52wk3o4se@msg.df7cb.de>
> postgres=# select test_param_where();
> FEHLER:  XX000: unrecognized node type: 217
> KONTEXT:  SQL-Anweisung »select b        from numbers where a=x«
> PL/pgSQL-Funktion test_param_where() Zeile 6 bei SQL-Anweisung
> ORT:  ExecInitExprRec, execExpr.c:2031

The problem happens on the 6th iteration of this loop:

CREATE FOREIGN TABLE numbers(a int, b varchar(255)) SERVER mysql_svr OPTIONS (dbname 'testdb', table_name 'numbers');

create or replace function test_param_where() returns void as $$
DECLARE n varchar;
BEGIN FOR x IN 1..9 LOOP   select b into n from numbers where a=x;   raise notice 'Found number %', n; end loop;
return;
END
$$ LANGUAGE plpgsql;

SELECT test_param_where();

***************
*** 345,368 **** NOTICE:  Found number Three NOTICE:  Found number Four NOTICE:  Found number Five
! NOTICE:  Found number Six
! NOTICE:  Found number Seven
! NOTICE:  Found number Eight
! NOTICE:  Found number Nine
!  test_param_where 
! ------------------
!  
! (1 row)
!  DELETE FROM employee;
...
--- 344,365 ---- NOTICE:  Found number Three NOTICE:  Found number Four NOTICE:  Found number Five
! ERROR:  unrecognized node type: 217
! CONTEXT:  SQL statement "select b        from numbers where a=x"
! PL/pgSQL function test_param_where() line 6 at SQL statement
! /* DELETE FROM employee;
...

Christoph


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