Re: How can i get record by data block not by sql?

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.