## prepare some SELECT statement
$sth->execute() || die "Error: " . $dbh->errstr;
if( $sth->rows > 0 ){
 ## do some stuff
}

##</code><code>##

($_='kkvvttuubbooppuuiiffssqqffssmmiibbddllffss')
 =~y~b-v~a-z~s;                             print