Peter Eisentraut <peter_e@gmx.net> writes:
> This patch was installed, with xor as "#". The parser still needs work.
> Besides the known issue of "|", this also parses funny:
> => select 5 & ~ 6;
> ERROR: Unable to identify a right operator '&' for type 'int4'
I think we're kind of stuck on that, at least in terms of a solution
specifically for ~ --- I don't think we should be wiring knowledge of
whether specific operators are prefix/suffix/infix into the grammar.
It might perhaps be possible to tweak the grammar so that
operand operator operator operand
is generically resolved as
operand infix-op (prefix-op operand)
and not
(operand postfix-op) infix-op operand
the way it is now. Given that postfix operators are relatively seldom
used, this seems a more sensible default --- but I suppose somewhere out
there is an application that will break. (At least it probably won't
break silently.)
Comments anyone?
regards, tom lane
