InstallDate__c false if(AssetMark__c='耗材', Posting_Date__c, if(New_logic_data__c, if(AND(!ISBLANK(ChangeWarrantyStartDate__c),WarrantyChanges__c), ChangeWarrantyStartDate__c, if(OR(ISBLANK(EntryDate__c) ,EntryDate__c - Posting_Date__c >= 100), Posting_Date__c + 7, InstallDate)), Nullvalue(InstallDate,Posting_Date__c))) BlankAsZero 保修开始日 false false Date