Better handling of parse errors

From: Gavin Sherry <swm(at)linuxworld(dot)com(dot)au>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Better handling of parse errors
Date: 2002-08-06 12:18:00
Message-ID: Pine.LNX.4.21.0208062211200.16671-101000@linuxworld.com.au
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Hi all,

Attached is a small patch to scan.l for consideration. It hands
yyerror() the position in the query string of the token which caused a
parse error. It is not even close to an implementation of error handling
a-la SQL99 but it certainly makes debugging complicated queries easier.

I've done some testing and it appears to hit the offending token pretty
accurately.

Can anyone find a way to break this? If not, I'd love to see it in 7.3.

Gavin

Attachment Content-Type Size
scanner.diff.gz application/x-gzip 872 bytes

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