(ncn:NrContribution) RETURN nco, ncn", " MERGE (nco)-[rel:IS_SESSION_MUSICIAN]->(ncn) SET rel.createdBy = 'database/NR-887_dupe_new_IS_SESSION_MUSICIAN_relation', rel.createdAt = datetime(), rel.lastModifiedAt = datetime(), rel.lastModifiedBy = 'database/NR-887_dupe_new_IS_SESSION_MUSICIAN_relation' ", {batchSize:50,iterateList:true,parallel:true,concurrency:5} ) YIELD total, errorMessages RETURN total, errorMessages ]]>