hp data protector v6.1x downloadName: hp data protector v6.1x downloadCategory: SoftPublished: ravireme1971Language: English                          thanks , it worked for me.This would be useful for querying for past versions of documents that didn't have certain fields.You can try the coalesce operator (double question mark ??). For example, to check if a Foo is undefined/null/false query.where(d.Foo == null…See More