From: | novice <user(dot)postgresql(at)gmail(dot)com> |
---|---|
To: | "Mark Morgan Lloyd" <markMLl(dot)pgsql-general(at)telemetry(dot)co(dot)uk> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Getting text into a table |
Date: | 2008-12-10 21:32:10 |
Message-ID: | ddcb1c340812101332k613d8feo35a3eda4ef6911ef@mail.gmail.com |
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Lists: | pgsql-general |
2008/12/11 Mark Morgan Lloyd <markMLl(dot)pgsql-general(at)telemetry(dot)co(dot)uk>:
> I wonder if I could ask a question which might be marginally off-topic: how
> do people assemble multiple lines of text into a row in a table?
>
> I've got a number of cases where I've got a file containing some sort of
> activity log, where a sequence of activities extends over multiple lines.
>
> In some cases multiple activities might be interleaved, rather than each
> activity comprising a sequence of contiguous lines.
>
> Complicating things, related lines might be only recognisable by content.
>
> As an example, a Sendmail maillog file where a delayed outgoing message will
> result in a number of lines of text. I'd like each row in the table to
> contain the sender, recipient, eventual state, and the time it took to
> arrive at that state.
>
> I'm sure I'm not the only person doing this sort of thing, but there has to
> be a better answer than coding Perl for each job. Does anybody have any
> suggestions for tools well-matched to this sort of problem, i.e. that can
> match patterns, store matched patterns or update counters, backtrack where
> necessary, and so on?
>
You're right, you're not the only one. I use awk and postgres's substr
function, but I'm only a newbie and I'm hoping to hear about the more
easy/advanced options available.
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