This line in your code:

print $CGI->p("rows is ", @$rows);
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is telling perl to stringify a list of array references and print them out as strings to your web page. And that is exactly what you are seeing. Those "ARRAY(0x....)" things are perl's normal way of converting references into strings.

Others have pointed other problems with the code, which you might have fixed. Do pay special attention to every "@" and "$", and to the (absence of) spaces around them -- perl is especially picky about those details, because it needs to be.