}
+sub _upgrade_schema {
+ #my ($class, %opts) = @_;
+
+ my $sql = 'UPDATE cust_refund SET source_paynum = NULL
+ WHERE source_paynum IS NOT NULL
+ AND NOT EXISTS ( SELECT 1 FROM cust_pay
+ WHERE paynum = cust_refund.source_paynum )
+ ';
+ my $sth = dbh->prepare($sql) or die dbh->errstr;
+ $sth->execute or die $sth->errstr;
+ '';
+}
+
# Used by FS::Upgrade to migrate to a new database.
sub _upgrade_data { # class method
my ($class, %opts) = @_;