odatamicrosoft-graph-apimicrosoft-graph-mail

Getting conversations from Microsoft Graph API Messages

I'm trying to get the most recent message for each conversationId in a specific folder from Microsoft Graph API. What OData query can get the most recent message for each conversationId from Microsoft Graph API?

I am using their query parameter syntax, but I can't get aggregation working so that I can use groupby.

$apply=groupby(conversationId, topcount(1, createdDateTime))

There are no error messages when using the above query. This is expected behavior for Graph API when it does not support the query. I suppose that either my query is wrong or it truly does not support aggregation.

Solution

  • Unfortunately, Microsoft Graph does not support aggregation.