I'm not sure what is going on here.
Prepare the statement before starting the loop (do it only once)
Execute the statement, filling in the placeholder (?) within the loop
my $addr_lookup =
'SELECT u2addr.id FROM u2addr WHERE u2addr.addr = ?';
my $stm = $dbh->prepare($addr_lookup);
foreach my $addr (@addr)
{
$stm->execute($addr);
my @results=();
while (my @row = $stm->fetchrow_array)
{
push (@results, [@row]); #push array ref to @row
#using new memory and copy of @row
#could also just fetchrow_arrayref
}
## do something with @results here...
## perhaps: "print Dumper \@results;"
## to see what you have in @results?
}
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