Hi, Solr supports atomic updates as described at https://lucene.apache.org/solr/guide/7_6/updating-parts-of-documents.html#atomic-updates
But I wonder how to create a streaming expression that does atomic updates. We want to search for documents matching a given criteria and update a particular of them. If I do a „full“ update it works, but I have no idea about how to run an atomic update. For example I try to set all fieldB to „foo“, this full update works commit( update( select( export( … ), id, fieldA, val(foo) as fieldB ) ) Something like this doesn’t: commit( update( select( export( … ), id, val({„set“: foo}) as fieldB ) ) Any ideas? Markus