Re: geting results of query in plperl

[Andy Colson <andy@xxxxxxxxxxxxxxx>]

On 3/6/20 6:57 AM, stan wrote:
> I have looked at:
>
> https://www.postgresql.org/docs/8.4/plperl-database.html
>
> I am also comfortable querying data from tables in perl.  But I do not
> quite see how to get the results of a query in plperl.  Here is what I
> tried, and it is not working:
>
> my $rv2 = spi_exec_query('SELECT current_user');
> my $user = $rv2->{rows}[1]->{my_column};
>
>
> I have used this query in SQL functions, so I know it works. I also ran it
> in plsql.
>
> What do I have wrong here?

It starts at zero:
> my $user = $rv2->{rows}[0]->{my_column};

Here is some live code:

	my ($q, $i, $row, %map);
	$q = spi_exec_query('select lower(username) as username, id from employee');
	foreach $i (0.. $q->{processed} - 1)
	{
		$row = $q->{rows}[$i];
		$map{ $row->{username} } = $row->{id};
	}
	$q = undef;