$sql_statement = qq|insert into log_table
	(field1, field2, field3, field4, field5, field6)
	VALUES
	(?,?,?,?,?,?)|;
$sth{'6'} = $dbh->prepare($sql_statement);

$sql_statement = qq|insert into log_table
	(field1, field2, field3, field4, field5, field6, field7)
	VALUES
	(?,?,?,?,?,?,?)|;
$sth{'7'} = $dbh->prepare($sql_statement);

$sql_statement = qq|insert into log_table
	(field1, field2, field3, field4, field5, field6, field7, field8)
	VALUES
	(?,?,?,?,?,?,?,?)|;
$sth{'8'} = $dbh->prepare($sql_statement);