On Sat, May 21, 2016 at 4:28 PM, <thomas.alton@gmail.com> wrote:
> ERROR: XX000: unrecognized node type: 920
> LOCATION: raw_expression_tree_walker, nodeFuncs.c:3410
>
> I expected the query run successfully and return one row with 'a'.
This is clearly a bug.
920 is IndexElem, which can appear in a raw parse tree in 9.5, due to
ON CONFLICT's use of inference reusing what was previously only used
for CREATE INDEX. (It does not make it into the post-parse analysis
tree, though).
RECURSIVE isn't really special. You don't see the bug in the
non-RECURSIVE case because of the differing rules on query name
visibility.
I'll add a fix for this bug to my personal TODO list. It shouldn't be
hard to fix.
--
Peter Geoghegan
