I can see some problems in your code.
First, you're using single quotes in the Data param, wich is going to insert you the literal text "&sql".
You're also printing what you want your function to return, not returning it. Maybe something like that (untested):
sub sql {
my @output = $sqlCount->execute;
my @data;
while (@output=$sqlCount->fetchrow_array) {
push @data, @output;
}
$sqlCount->finish();
$dbcon->disconnect();
return \@data
}
And, in the Data field:
my $data = join "\n", @{ +sql() };
...
Data => $data
...
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