From: Pavel Stehule <pavel.stehule@gmail.com>
To: Trinath Somanchi <trinath.somanchi@gmail.com>
Cc: silly sad <sad@bankir.ru>
Cc: pgsql-sql@postgresql.org
Subject: Re:
Date: Mon, 5 Jul 2010 08:35:13 +0200
Message-ID: <AANLkTim14jFZXqTo1-LsFvg9HXYcrkEwStqJpADYEdLg@mail.gmail.com> (raw)
In-Reply-To: <AANLkTikMUp9xLEYYT8rlXX30Q7Gl1IusxXnsTnwQvysz@mail.gmail.com>
References: <AANLkTimLXJitQ9sPf0I-iDeRwtrWloLJbfGzE-E2hGif@mail.gmail.com>
<4C3177B8.3080803@bankir.ru>
<AANLkTikMUp9xLEYYT8rlXX30Q7Gl1IusxXnsTnwQvysz@mail.gmail.com>
Hello
use a LO interface
http://www.postgresql.org/docs/8.4/static/lo-interfaces.html
exact form depends on language that you are use.
Regards
Pavel Stehule
2010/7/5 Trinath Somanchi <trinath.somanchi@gmail.com>:
> Hi,
>
> I'm new in using BLOB. How will the insert for storing very large byte
> strings into a column of data type Blob.
>
> On Mon, Jul 5, 2010 at 11:42 AM, silly sad <sad@bankir.ru> wrote:
>>
>> On 07/05/10 09:57, wrote:
>>>
>>> Hi,
>>>
>>> How can I store Byte strings into a postgresql database.
>>> Is there any special command to store it. How will be the sql query.
>>
>> there is only '\0' byte incapable to input-output.
>> so u have to have it escaped at all costs _AND NOTHING MORE_.
>>
>> "escaped" doesn't mean "prefixed with backslash"
>> ("backslash method" cause a zero-byte to pass SQL parser an to be actually
>> stored, BUT
>> the output will be corrupted, because of this zero-byte will be actually
>> output)
>>
>> You may use the BYTEA type
>> (similar to the TEXT but with different input-output) which effectively
>> escapes zero-byte and a lot of other completely harmless bytes as well
>> (probably to reach a better overhead)
>>
>> Or you may introduce a pair of your own escape rules.
>>
>> Unfortunately there are no way to influence The Pg Developers to get rid
>> of the nasty god damned CSTRING off the input/output operations.
>>
>>
>> --
>> Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
>> To make changes to your subscription:
>> http://www.postgresql.org/mailpref/pgsql-sql
>
>
>
> --
> Regards,
> ----------------------------------------------
> Trinath Somanchi,
>
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Subject: Re:
In-Reply-To: <AANLkTim14jFZXqTo1-LsFvg9HXYcrkEwStqJpADYEdLg@mail.gmail.com>
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