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SwMatchUS
Advocate I
Advocate I

How to handle Dataverse List Rows that return no results

Hello Community!

 

As a novice to Power Automate, I am not sure how to handle this situation.  

 

I have a flow with an action to List Rows from the Dataverse and I am Filtering the Row.  It is common for this List Rows action to not return results.  If no results are returned, I still want the flow to continue.

 

The next action after List Row is to Update a Row and if no rows are returned from the List Row, I plan to insert a NULL value in the update.  If there is a row returned from the list row I plan to insert a value in the update.

 

I'm not sure how to handle the List Row when it returns no value.  Right now it stops the Flow as a failure.

 

Suggestions? 

Thank you!

7 REPLIES 7
SudeepGhatakNZ
Multi Super User
Multi Super User

@SwMatchUS ,

 

Just making sure I follow your question!

If there are no rows returned, what are you updating? Is it a row in a separate table?

Shouldn't it be, if not rows returned create a row otherwise update.

 

If my suggestion helped you, please give it a Thumbs up and Mark it as a Solution so that it can benefit others in the community.
Sudeep Ghatak
Microsoft MVP, Business Applications
www.sudeepghatak.com
SwMatchUS
Advocate I
Advocate I

Hi @SudeepGhatakNZ 

 

Yes, the idea is to List Rows and if the row exists use a value from that row to create a new row in a different table.  If a row does not exist then insert a NULL value when creating a new row in a different table.

SudeepGhatakNZ
Multi Super User
Multi Super User

If it is not a required field, you can insert null using the expression.

SudeepGhatakNZ_1-1668723015585.png

 

 

If my suggestion helped you, please give it a Thumbs up and Mark it as a Solution so that it can benefit others in the community.
Sudeep Ghatak
Microsoft MVP, Business Applications
www.sudeepghatak.com
bhssru
Helper I
Helper I

You can evaluate the length of the array output by the list rows action to determine the number of matches. If it's empty the length is 0.

 

Insert a condition step after your list rows action that evaluates the length of the response body.

Insert the length expression in one side of your condition: 

length(outputs('List_Rows')?['body/value'])
and test if equal to 0. 
bhssru_0-1668723216921.png

You can also define the condition as greater than 0 (true if one or more matches), equal to 1 (one exact match only) and so on depending on your requirement.

 

Hope this helps!

 

Hi @bhssru 

 

I did just that!  I added a condition to evaluate the count of records returned from the List Rows action.   I've set the condition to if the length is gte 1.  When this evaluates to true it works with no problem.

 

However, when the List Rows returns no results the condition fails with the error:

ActionConditionFailed. The execution of template action 'Dynamics_Count' is skipped: the 'runAfter' condition for action 'Get_Dynamics' is not satisfied. Expected status values 'Succeeded' and actual value 'Skipped'.

 

That suggests the 'Get Dynamics' action is being skipped rather than running and returning no results. You could try to change the 'run after' on your condition, but it sounds like an issue with 'Get_Dynamics'

Can you share a picture of the flow run?

 

vineksie
Frequent Visitor

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