CALL apoc.periodic.iterate( " MATCH (lp:LabelParticipant) WHERE lp.name = '' RETURN lp ", " SET lp.name = toString(lp.uuid), lp.normalizedName = lp.name ", {batchSize:1000, iterateList:true, parallel:true, concurrency: 5} ); CREATE CONSTRAINT ON (lp:LabelParticipant) ASSERT (lp.normalizedName, lp.vendorId, lp.subaccountId) IS NODE KEY