在Neo4j（4.1.3）中，如果一个节点不存在，如何逐个对3个节点进行匹配

我有两名员工，承包商。我需要首先在Employees中获取姓名的id，如果在Contractors中找不到，则在Contractors中仍然找不到默认姓名的id。到目前为止，我有以下信息，但我没有正确的IF systax

WITH row WHERE row.CREATED_BY is not null and row.CREATED_BY <> 'None'
  CALL apoc.when(row.CREATED_BY_NTID IS NOT NULL,
          "MATCH (p:Employee {name: row.CREATED_BY}) WHERE p.account ENDS WITH row.CREATED_BY_NTID return p",
          "MATCH (p:Employee {name: row.CREATED_BY}) return p",
          {row:row}) yield value
With row, value.p as p
  IF value.p IS null
    CALL apoc.when(row.CREATED_BY_NTID IS NOT NULL,
          "MATCH (p:Contractor {name: row.CREATED_BY}) WHERE p.account ENDS WITH row.CREATED_BY_NTID return p",
          "MATCH (p:Contractor {name: row.CREATED_BY}) return p",
          {row:row}) yield value
With row, value.p as p
  IF value.p IS null
        match (p:Employee) where p.name starts with 'XXXXXXX' return p

行，其中row.CREATED_BY不为null，row.CREATED_BY“None”
调用apoc.when（row.CREATED_BY_NTID不为空，
“匹配（p:Employee{name:row.CREATED_BY}），其中p.account以row.CREATED_BY_返回p结尾”，
“匹配（p:Employee{name:row.CREATED_BY}）返回p”，
{row:row}）屈服值
对于行，value.p作为p
如果value.p为空
调用apoc.when（row.CREATED_BY_NTID不为空，
“匹配（p:Contractor{name:row.CREATED_BY}），其中p.account以row.CREATED_BY_返回p结尾”，
“匹配（p:Contractor{name:row.CREATED_BY}）返回p”，
{row:row}）屈服值
对于行，value.p作为p
如果value.p为空
匹配（p:Employee），其中p.name以“XXXXXXX”开头返回p

我能够在apoc.when中添加多个条件（出于某种原因，当我发布时，它不起作用，可能我有其他问题）

---

您使用的是neo4j 4.x吗？是的，我使用的是4.1.3-还编辑了我的问题。谢谢

WITH row 
  CALL apoc.when(row.CREATED_BY_NTID IS NOT NULL,
          "MATCH (p:Employee {name: row.CREATED_BY}) WHERE p.account ENDS WITH row.CREATED_BY_NTID return p",
          "MATCH (p:Employee {name: row.CREATED_BY}) return p",
          {row:row}) yield value
With row, value.p as p
    CALL apoc.when(row.CREATED_BY_NTID IS NOT NULL AND p is NULL,
          "MATCH (p:Contractor {name: row.CREATED_BY}) WHERE p.account ENDS WITH row.CREATED_BY_NTID return p",
          "MATCH (p:Contractor {name: row.CREATED_BY}) return p",
          {row:row}) yield value
With row, value.p as p
CALL apoc.when(p is NULL,
        "match (p:Employee) where p.name starts with 'XXXXXXX' return p", "", {row:row}) yield value
....