I know somewhere in this code is a stupid mistake, but I just can't find it, so, I'm looking for another pair of eyes. Please help! The error message I'm getting on the following code is:
Transaction aborted because DBD::mysql::st fetchrow_arrayref failed: fetch() without execute() at info.pl line 239.
please look this over and tel me where I blew it. Thank you! 
foreach my $col(@Rcols){
push(@AllCols,$col);
}

my $table='foo';
my $fields=join(",",@Rcols);
my($sth);

my $sql = qq{SELECT $fields FROM $table Where workorder_id=?};

$sth = $dbhSt->prepare_cached($sql);
foreach my $rec (sort(keys(%workOrder))){
@workOrders='';
@workOrders=@{$workOrder{$rec}};
@AllKeys=sort(keys(%patient));
@theseIDs=sort grep(/^$rec/,@AllKeys);

foreach my $wo(sort @workOrders){
if($wo eq ''){next;}
else{

$sth->execute($wo);

my %row =();
$sth->bind_columns(map {\$row{$_}} @Rcols);
while (@values=$sth->fetchrow_arrayref){
@values='';

foreach my $col(@Rcols){

my $val= $row{$col};
if($val eq ''){
$val='NULL';
}
push(@values,$val);
}}
@AllValues='';

$k=shift(@theseIDs);
@AllValues=@{$patient{$k}};
push(@AllValues,@values);
$patient{"$k"}=[@AllValues];

}
}
}
$sth->finish;

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In reply to stupid mistake in DBI code by cliffrubinmusic

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