RE: Difference between null and empty string in Appian

ekanshj — Wed, 10 Jul 2019 03:11:55 GMT

Hi rebecar369
You can use something like this to find out if the value is NULL or Empty String

load(
  local!value: NULL,
  typename(typeof(local!value))
  )

Here you will get the output as "NULL" if the value is null otherwise List of Variants or Texts

RE: Difference between null and empty string in Appian

ChristineLHutchison — Tue, 09 Jul 2019 16:27:34 GMT

What is the use case?
Generally when a field can be either, we use or(pv!field="", isnull(pv!field)). If it is an array, you can check isnull and length-0

Hope that helps.