Обсуждение: parametrized query

I tried but couldn't find an answer if this is possible in psql.

Create a file named test.sql
    select * from mytable where id = ? (or use $1, $2...)
Then in psql do
    \i test.sql 337

to achieve the same effect "select * from mytable where id=337"

as I would in perl
    $sth = $dbh -> prepare ("insert into mytable values (?, ?, ?)")

Is writing a function the only way? Is there another way that can be done
without writing a function?

Thanks,
Ben Kim

Put it into a shell script like

echo "select * from mytable where id = $1;" | psql $DBNAME

That can be executed using the shell function in psql

\! [COMMAND]   execute command in shell or start interactive shell

regards,

-Andreas


On Wednesday 28 April 2004 17:46, Ben Kim wrote:
> I tried but couldn't find an answer if this is possible in psql.
>
> Create a file named test.sql
>     select * from mytable where id = ? (or use $1, $2...)
> Then in psql do
>     \i test.sql 337
>
> to achieve the same effect "select * from mytable where id=337"
>
> as I would in perl
>     $sth = $dbh -> prepare ("insert into mytable values (?, ?, ?)")
>
> Is writing a function the only way? Is there another way that can be done
> without writing a function?
>
> Thanks,
> Ben Kim
>
>
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