Always use placeholders. Examples below.

$dbh->do('UPDATE table SET col = ? WHERE id = ?', {}, $value, $id);

my $sth = $dbh->prepare('SELECT foo, bar FROM table WHERE baz = ?');

$sth->execute($baz);

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In reply to Re^2: Avoiding SQL insecurities by eclark
in thread Avoiding SQL insecurities by FubarPA

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