Re: Re: Re: binary data

On Fri, Jun 22, 2001 at 10:22:32AM -0400, Tom Lane wrote:

> He did say the rules for escaping things are tricky ;-). You need to
> double the backslashes, because interpretation of the string literal
> takes off one level of backslashing before bytea ever sees it:
>
> regression=# INSERT INTO log (data) VALUES ('null \\000 null');
> INSERT 273181 1
> regression=# SELECT octet_length(data), data FROM log;
> octet_length | data
> --------------+------------------------------
> 10 | plain text
> 19 | special chars \012 \001 \002
> 5 | null
> 11 | null \000 null
> (4 rows)

And what use some better encoding if you have a lot of binary chars
in data. For example base64, that code 2 chars to 3 instead \\000
that encode 1 char to 4.

Karel

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Karel Zak <zakkr(at)zf(dot)jcu(dot)cz>
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