| From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | brett(at)work(dot)chicken(dot)org (Brett McCormick) |
| Cc: | pgsql-hackers(at)hub(dot)org |
| Subject: | Re: [HACKERS] expr ? trueval : falseval |
| Date: | 1998-03-20 17:03:31 |
| Message-ID: | 199803201703.MAA07780@candle.pha.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
>
>
> expr ? trueval : falseval
>
> if expr evaluated is true, the entire expression is trueval evaluated,
> otherwise it is falseval evaluated.
>
> Is it possible to have this sort of grammar logic in the parser?
Good question. Answer is no, I think, unless you can do some fancy
things with functions.
--
Bruce Momjian | 830 Blythe Avenue
maillist(at)candle(dot)pha(dot)pa(dot)us | Drexel Hill, Pennsylvania 19026
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