On Fri, Jan 26, 2007 at 05:10:01PM +0000, Gregory Stark wrote: > However to fully support the DB2/ANSI syntax we would definitely have an > ambiguity and I think we would have to make "CYCLE" a fully reserved word > which seems like a much bigger concession than "WITH". Observe the following > case: > > WITH RECURSIVE foo (x,y) AS (select 1,2) SEARCH DEPTH FIRST BY x CYCLE x,y > SET ... > > The parser can't search arbitrarily far checking for a SET to see if the CYCLE > is a keyword or a binary operator.
Er, CYCLE isn't a binary operator, and users can't make binary operators that are words, so I'm not sure of the problem here. I think the parser can tell that the expression ends at the word "cycle". Or am I missing obvious? Have a nice day, -- Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/ > From each according to his ability. To each according to his ability to > litigate.
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