Re: BETWEEN SYMMETRIC/ASYMMETRIC - Mailing list pgsql-hackers

From Christopher Kings-Lynne
Subject Re: BETWEEN SYMMETRIC/ASYMMETRIC
Date
Msg-id GNELIHDDFBOCMGBFGEFOCEBBCCAA.chriskl@familyhealth.com.au
Whole thread Raw
In response to Re: BETWEEN SYMMETRIC/ASYMMETRIC  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: BETWEEN SYMMETRIC/ASYMMETRIC  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
> "Christopher Kings-Lynne" <chriskl@familyhealth.com.au> writes:
> > Can someone comment on my use of %prec BETWEEN?  Is that still
> correct now
> > that we have the extra BETWEEN forms?
>
> Looks fine.  AFAICS we want all these forms to have the binding
> precedence assigned to BETWEEN.  If you don't do the %prec thing
> then the productions will have the precedence of their rightmost
> terminal symbol, ie, AND, ie, wrong.

OK, I've proven that I cannot move the SYM/ASYM keywords anything lower than
totally reserved without causing shift/reduce errors.  Is this acceptable?

Also, Tom (or anyone): in regards to your previous email, should I just go
back to using opt_symmetry to shorten the number of productions, since I
have to make them reserved words anyway?

Chris



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