Re: ERROR: wrong varnullingrels (b 3) (expected (b)) for Var 2/1

Richard Guo <guofenglinux@gmail.com> writes:
> Oh, wait ... It occurred to me that we may have this same issue with
> Memoize cache keys.  In get_memoize_path we collect the cache keys from
> innerpath's ppi_clauses and innerrel's lateral_vars, and the latter may
> contain nullingrel markers that need adjustment.  As an example,
> consider the query below

> explain (costs off)
> select * from onek t1
>     left join onek t2 on true
>     left join lateral
>       (select * from onek t3 where t3.two = t2.two offset 0) s
>       on t2.unique1 = 1;
> ERROR:  wrong varnullingrels (b 3) (expected (b)) for Var 2/3

Good catch --- I'll take a closer look tomorrow.

            regards, tom lane