On 9 March 2012 18:26, Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> wrote:
Show quoted text> On 9 March 2012 18:06, Greg Sabino Mullane via RT
> <bug-DBD-Pg@rt.cpan.org> wrote:
>> <URL:
https://rt.cpan.org/Ticket/Display.html?id=69423 >
>>
>> What error message are you seeing? This will not work as it stands,
>> because placeholders are not allowed in the FETCH section via Postgres'
>> PREARE. You can make it work by setting pg_server_prepare to 0. Note that
>> you may also need a recent commit if you are also using bind_param, else
>> it will use PQexecParam and you will see the same error.
>>
>> Commit is: 702d8d097c1ed8463f12f7a32b8d4f32d6d07e5b
>>
> The proper syntax for postgres is to quote the count, i.e. this works
> fine and is what i'm using now:
> my $sth = $dbh->prepare("
> SELECT * FROM x
> OFFSET 0 ROWS
> FETCH NEXT (:count) ROWS ONLY
> ");
> $sth->bind_param(":count", $count, SQL_INTEGER);
>
> I consider this fixed (resp. unfixable from DBD POV) since this is a
> glitch in the postgres grammar.
> This glitch will not be fixed on the postgres side since the grammar
> in this area does not really allow for non-quoted parameters (at least
> easily).
> HTH,
Forgot to mention that this was added to the postgresql documentation.
See
http://www.postgresql.org/docs/9.1/static/sql-select.html#SQL-LIMIT
[quote]
SQL:2008 introduced a different syntax to achieve the same result,
which PostgreSQL also supports. It is:
OFFSET start { ROW | ROWS }
FETCH { FIRST | NEXT } [ count ] { ROW | ROWS } ONLY
In this syntax, to write anything except a simple integer constant for
start or count, you must write parentheses around it.
[end of quote]
thanks,
