Hello, I am writing an script that performs a series of database queries. I need to test each result set determine if any rows were returned. So, for example, my code might look like: 
my @AssignmentIDs = ();
my $GetAssignmentID_sth=$query_dbh->prepare($SQL);
$GetAssignmentID_sth->execute();
my $rows = $GetAssignmentID_sth->rows;
  if($rows > 0) {
    while (my ($AssignmentID, $UserCount) = $GetAssignmentID_sth-> fet
+chrow_array() )  {
          push(@AssignmentIDs, $AssignmentID);
    }
  }
my $AssignmentIDs = join(",",@AssignmentIDs);
$GetAssignmentID_sth->finish();

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The next query I perform, I would like to reuse the following code: 
if($rows > 0) {}

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I receive the warning, however, that: 
"my" variable $rows masks earlier declaration in same scope

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Of course, I can use some other variable than $row but it would look cleaner if I did not have a proliferation of such variables. Is there are way I can undefine the variable after I use it once? I tried adding the following code but it did not correct the issue: 
undef $row;

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Thanks!

In reply to Reusing a variable declared earlier in the same scope by reluctant_techie

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