update mantis_bug_table set mantis_bug_table.original_due_date=mantis_bug_table.due_date where mantis_bug_table.original_due_date in (0,1) and mantis_bug_table.due_date not in (0,1);
update mantis_bug_table
原文：http://www.cnblogs.com/sky20080101/p/6999292.html
