Re: Another regexp performance improvement: skip useless paren-captures

From: Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Andrew Dunstan <andrew(at)dunslane(dot)net>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Joel Jacobson <joel(at)compiler(dot)org>
Subject: Re: Another regexp performance improvement: skip useless paren-captures
Date: 2021-08-10 01:24:35
Message-ID: 483D6799-DC84-44BE-8046-2281B14257DB@enterprisedb.com
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> On Aug 9, 2021, at 6:17 PM, Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com> wrote:
>
> Well, this doesn't die either:

Meaning it doesn't die in the part of the pattern qualified by {0} either. It does die in the other part. Sorry again for the confusion.

—
Mark Dilger
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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