Hi monks, how do you do?

I have one little newbie question here. I don't quite get this. I get a "Use of uninitialized value in substraction (-)" warning on this code:
sub queryDBI
{
my $query1 = "SELECT $_[2],$_[3],$_[$_-1] FROM ".$_[1];

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I know the code is pointless right now I'm just doing some tests with DBI code. Well, the problem is the [$_-1] part.
I tried several different ways of getting rid of that but nothing works.Care to explain please?
Thanks in advance.

In reply to Uninitialized value warning in subrutine by Deib

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