Filter null values in Dataverse using Power Automate
Filtering records on empty values can be a real pain as there are many mistakes to make.
First of all I would like to have a look at the null function. Many times, I’ve seen people ask the question why their null values haven’t been working. Below 3 examples. Only one will really work.
You can type the text null (this is just 4 characters, n,u,l,l)
And then you can have empty strings (i.e. don’t fill in anything)
Mistake – Filter rows
Now how would we use the filter rows option to get just the records where a specified field is empty? You might want to try this:
Well the null function isn’t going to work like that! The above query will be evaluated as accountnumber eq
The eq operator has to have something on the right.
Also if you replaced the above with accountnumber eq ” you would only get the empty string values. which isn’t exactly the same as nothing. Huh???
When a field is not set Dataverse will not return that field at all and nothing is not the same as an empty string.
So how do we make this work?
Filter by null values
Now we can make use of FetchXml to filter by null values.
So for example if I wanted to find the accounts without an account number set I could use the following query:
Filter by not null values
And in a similar way I could also find all the records that do have an account number set:
All that is needed to filter your records are the null and not-null operators.
<fetch mapping='logical'> <entity name="account"> <attribute name="accountid"/> <attribute name="name"/> <attribute name="accountnumber"/> <filter> <condition attribute="accountnumber" operator="not-null"/> </filter> </entity> </fetch>
Continue Reading Pieter Veenstra’s Article on their blog
Filtering records on empty values can be a real pain as there are many mistakes to make. First of all I would like to have a look at the null function. Many times, I’ve seen people ask the question why their null values haven’t been working. Below 3 examples.
Blog Syndicated with Pieter Veenstra’s Permission
More About This Author
- Modern Workplace14 July 2023Implement booking availability in Power Apps in less than 5 minutes
- Modern Workplace10 July 2023Delegation with SharePoint lists Power Apps vs Power Automate
- Modern Workplace4 July 2023Timing issues in relation to App OnStart, Screen OnVisible, Timers and user interruptions in Power Apps
- Modern Workplace3 July 2023Implement a PDF preview in a Model Driven Apps