Re: Picture with Postgres and Delphi

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От Jonathan Bartlett
Тема Re: Picture with Postgres and Delphi
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Msg-id Pine.GSU.4.44.0309102044200.16039-100000@eskimo.com
обсуждение исходный текст
Ответ на Re: Picture with Postgres and Delphi  (Guy Fraser <guy@incentre.net>)
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> What is the size limit of bytea, I thought it was 8K?

No limit

> How do you dump your database when you have bytea, do you need to do a
> binary dump?

Just dump it normally.

> What are you using to insert the binary data?

Depends.  For php, I use pg_escape_bytea, and just use it as an in-query
string value.  For perl, I use bind_param with SQL_BINARY.

Jon

>
> Thank you in advance.
>
> Guy
>
> Jonathan Bartlett wrote:
>
> >>For the education of me and maybe others too, why was
> >>that?  i.e. what problems did you run into, that bytea avoids?
> >>
> >>
> >>
> >
> >Compared to the filesystem, bytea provides data integrity.
> >
> >Bytea gives you remote access, which you can cache if needed.
> >
> >Bytea gives you the same permissions as anything else in Postgres, so you
> >don't have to worry about that separately.
> >
> >Compared to BLOBs, bytea's are just simpler.  You can select them with a
> >single statement, you don't have to worry about leaving unreferenced
> >BLOBs, and, after 4 billion inserts, byteas are still meaningful while
> >BLOBs might not be. (due to OID problems).
> >
> >Jon
> >
> >
> >
> >
> >>__________________________________
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> >>
> >>
> >>
> >
> >
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> >
> >
> >
> >
>
> --
> Guy Fraser
> Network Administrator
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> 780-450-6787 , 1-888-450-6787
>
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