Re: [HACKERS] Re: psql and comments - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: [HACKERS] Re: psql and comments
Date
Msg-id 199910071750.NAA02744@candle.pha.pa.us
Whole thread Raw
In response to Re: [HACKERS] Re: psql and comments  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: [HACKERS] Re: psql and comments  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
> Bruce Momjian <maillist@candle.pha.pa.us> writes:
> >> Efficiency is all, along with (probably) the backend being unhappy
> >> getting *only* a comment and no query.
> 
> > That is fixed now.
> 
> Is it?  postgres.c treats an all-whitespace input as an empty query,
> but if you pass it a comment and nothing else it will cycle the parser/
> planner/executor, and I'm not sure every phase of that process behaves
> reasonably on empty input.  Also, that path will not produce the
> "empty query" response code that you get from all-whitespace input.
> I *think* libpq doesn't depend on that anymore, but other frontend
> libraries might...
postgres -D /u/pg/data testPOSTGRES backend interactive interface $Revision: 1.130 $ $Date: 1999/09/29 16:06:10
$backend>-- testbackend> 
 

Is that what you mean?    


--  Bruce Momjian                        |  http://www.op.net/~candle maillist@candle.pha.pa.us            |  (610)
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