UI-wise, right click and ignore, configure context dialog opens, based on current context. Having pre-populated table name, column name, type, value, change type, possible to leave as is (not very useful), or set table name to null/empty or customize other filter options (LIKE, BETWEEN, ENDWITH etc). For example, you don't care if default values for dates are X on one database and Y on another, so ignore this change. Or if some column is missing on some table etc. Configurable by comparison, possible to save as a rule set to file.