[EMAIL PROTECTED] (Peter Eisentraut) writes:
> Log Message:
> -----------
> Add support for xmlval IS DOCUMENT expression.

I don't think I trust your reverse-listing of IS DOCUMENT; you need
parens around the argument to be sure it is parsed the same way next
time, if it's not a trivial expression.

Or you could teach the pretty-print code the correct precedence rules,
but this patch hasn't done that.

                        regards, tom lane

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