Very quick answer : don't 'forge' variable name. Use an array. If you realy need to 'forge' name, use an hash:
my %names;
$names{$linename.$counter} = "use pricedb;" ;
With an array:
#my $line1 = "use pricedb;";
my @lines = (
"use pricedb;" ,
"..." ,
"..." ,
);
for my $counter (1 .. 10) {
my $rowsaffected = $dbh ->do($lines[$counter]);
#...
Better, without $counter:
for my $line (@lines) {
my $rowsaffected = $dbh ->do($line);
#...
English is not my mother tongue.
Les tongues de ma mère sont "made in France".
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