From: | Ben Chobot <bench(at)silentmedia(dot)com> |
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To: | "姜头" <104186179(at)qq(dot)com> |
Cc: | "pgsql-performance" <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: How can i get record by data block not by sql? |
Date: | 2011-10-03 14:29:16 |
Message-ID: | 3FA6D7FE-5684-46FC-B5EF-8DA9E1BF324C@silentmedia.com |
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Thread: | |
Lists: | pgsql-performance |
On Oct 3, 2011, at 6:52 AM, 姜头 wrote:
> How can i get record by data block not by sql?
>
> I want to read and write lots of data by data blocks and write record to a appointed data block and read it.
> so i can form a disk-resident tree by recording the block address. But i don't know how to implement in postgresql.
> Is there system function can do this?
> Can someone help me?? Thank you very very much!!!!1
It sounds like you should look into the COPY command, or, if you're adventurous, the pg_bulkload project. They might get you the speed you're after, if not quite the implementation. But if what you're really after is to manipulate the table files directly - and I'm not sure why that would be a goal in itself - then perhaps SQL isn't for you.
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