From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Gregory Stark <stark(at)enterprisedb(dot)com> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Better error message for a small problem with WITH RECURSIVE |
Date: | 2008-10-08 12:46:01 |
Message-ID: | 27556.1223469961@sss.pgh.pa.us |
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Gregory Stark <stark(at)enterprisedb(dot)com> writes:
> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>> What we can do is keep a list of "not yet parsed WITH-names" in ParseState,
>> and check through that list when about to fail for relation-not-found, and
>> issue a suitable message hinting that maybe you forgot RECURSIVE if we find
>> a match.
> Perhaps it would be sufficient to just check if we're inside a non-recursive
> WITH without bothering to check if the name matches?
Even knowing that would require most of the same changes I made to do
the full nine yards, I think. The previous ParseState info didn't
record anything at all that would allow parserOpenTable to know that
a non-recursive WITH is being examined.
regards, tom lane
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