| From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Thomas Lockhart <lockhart(at)alumni(dot)caltech(dot)edu>, Peter Eisentraut <peter_e(at)gmx(dot)net>, Postgres Hackers List <hackers(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] Re: psql and comments |
| Date: | 1999-10-07 23:54:29 |
| Message-ID: | 199910072354.TAA09368@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
> OK, so the parser/planner/executor can cope with dummy input. That's
> good. There's still the problem of returning an 'empty query' response
> to the frontend. I think you'd probably need to hack up postgres.c
> so that when the querytree list produced by the parser is NIL, the
> IsEmptyQuery flag gets set --- this could be done instead of, rather
> than in addition to, the current test for an all-whitespace input
> buffer.
The system may already return that. My gram.y code tests for empty
queries, and should be doing the right thing. Not sure, because I am
not sure what to check for.
--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
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