(a:PublishingAgreement) MATCH (a)<-[:HAS_AGREEMENT]-(sw:PublishingSongWriter) OPTIONAL MATCH (a)<-[:HAS_AGREEMENT]-(pub:PublishingPublisher) CALL apoc.do.when( pub is NOT NULL, " MERGE (c)<-[hws:HAS_WRITER_SHARE]-(sw) SET hws.split = hp.split, hws.hasMusicContribution = hp.hasMusicContribution, hws.hasLyricsContribution = hp.hasLyricsContribution MERGE (c)<-[hps:HAS_PUB_SHARE]-(pub) SET hps.split = hp.split RETURN hws, hps ", " MERGE (c)<-[hws:HAS_WRITER_SHARE]-(sw) SET hws.split = hp.split, hws.hasMusicContribution = hp.hasMusicContribution, hws.hasLyricsContribution = hp.hasLyricsContribution RETURN hws ", { hp: hp, c: c, sw: sw, pub: pub } ) YIELD value RETURN value ]]>