Re: PQescapeByteaConn - returns wrong string for PG9.1 Beta3

On Wed, Aug 03, 2011 at 03:19:06PM +0200, Petro Meier wrote:
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> Please let me clarify the bug:
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>   CREATE TABLE "testtable"
>
> (
>
>   "ID" integer NOT NULL,
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>   "BinaryContents" bytea
>
> );
>
>   INSERT INTO "testtable" ("ID", "BinaryContents") values (1,
> E'\xea2abd8ef3');
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>   returns "invalid byte sequence".
>
>   '\xea2abd8ef3' is the string delivered by the PG 9.1 Beta3 server
> when calling PQescapeByteaConn(). It cannot be further processed by the
> server itself afterwards! There is a leading '\' missing.
>
>   When calling the function for a PG 9.0.1 server, then the result
> (correctly) is '\\xea2abd8ef3' (with a double-backslash!), and then the
> insert works fine, both, with PG9.1 Beta3 and PG9.0.1
>
>   It is a serious issue, as it will break all existing PostgreSQL
> applications that deal with binary contents and use PQescapeByteaConn().
>
>
>   Best regards
>
> Petro

That looks correct for the new default for SQL conforming strings set to
true in 9.1+. The command you should be using is:

INSERT INTO "testtable" ("ID", "BinaryContents") values (1, '\xea2abd8ef3');

Regards,
Ken