If you are feeding those SQL statements to DBI/|DBD::*, placeholders instead of the join on @values can save a lot of problems.. 
my $sql = sprintf "insert into mytable (%s) values (%s)",
             join(",", @columns),
             join(",", map {'?'} @values);  # couple different ways to
+ do this part
$dbh->do($sql, {}, @values);

[download]
Or for this example, SQL::Abstract can be very useful as well: 
use SQL::Abstract;
my $sql = SQL::Abstract->new;
my %data;
@data{@columns} = @values;  #hash slice to get column=>value pairs
my($sql, @bind) = $sql->insert($table, \%data);
$dbh->do($sql, {}, @bind);

[download]

In reply to Re^2: Why SprintF? by davidrw
in thread Why SprintF? by JasonCgi

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