mutation updateJoin($urn: String!, $input: JoinUpdateInput!) {
  updateJoin(urn: $urn, input: $input) {
    urn
    joinId
  }
}


Variables:

{
  "urn": "urn:li:join:d8bcde23-2043-4cb4-a1e0-ad3b580cccf6",
  "input": {
    "properties": {
      "name": "testName 2203",
      "dataSetA": "urn:li:dataset:(urn:li:dataPlatform:snowflake,DQM_DEV_NXGEXTDEV_DB.QTNGDEV.LINKER_FIELD_DEFS,DEV)",
      "datasetB": "urn:li:dataset:(urn:li:dataPlatform:snowflake,DQM_DEV_NXGEXTDEV_DB.QTNGDEV.LINKER_FIELD_DEFS_NEW_NEXT,DEV)",
      "joinFieldmappings": {
        "details": "Join 2203",
        "fieldMapping": [
          {
            "afield": "FIELD_NAME_2203",
            "bfield": "PRDT_TYP_2203"
          },
          {
            "afield": "FIELD_ORDER_2203",
            "bfield": "FIELD_LENGTH_2203"
          }
        ]
      }
    }
  }
}


Output:

{
  "data": {
    "updateJoin": {
      "urn": "urn:li:join:d8bcde23-2043-4cb4-a1e0-ad3b580cccf6",
      "joinId": "d8bcde23-2043-4cb4-a1e0-ad3b580cccf6"
    }
  },
  "extensions": {}
}



--------
Query join after the update:


query join ($urn: String!) {
  join(urn: $urn) {
    urn
    type
    joinId
    properties {
      name
      datasetA
      datasetB
      joinFieldMappings {
        fieldMapping {
          afield
          bfield
        }
        details
      }
    }
  }
}


Variables:

{
  "urn": "urn:li:join:d8bcde23-2043-4cb4-a1e0-ad3b580cccf6"
}

Output:

{
  "data": {
    "join": {
      "urn": "urn:li:join:d8bcde23-2043-4cb4-a1e0-ad3b580cccf6",
      "type": "JOIN",
      "joinId": "d8bcde23-2043-4cb4-a1e0-ad3b580cccf6",
      "properties": {
        "name": "testName 2203",
        "datasetA": "urn:li:dataset:(urn:li:dataPlatform:snowflake,DQM_DEV_NXGEXTDEV_DB.QTNGDEV.LINKER_FIELD_DEFS,DEV)",
        "datasetB": "urn:li:dataset:(urn:li:dataPlatform:snowflake,DQM_DEV_NXGEXTDEV_DB.QTNGDEV.LINKER_FIELD_DEFS_NEW_NEXT,DEV)",
        "joinFieldMappings": {
          "fieldMapping": [
            {
              "afield": "FIELD_NAME_2203",
              "bfield": "PRDT_TYP_2203"
            },
            {
              "afield": "FIELD_ORDER_2203",
              "bfield": "FIELD_LENGTH_2203"
            }
          ],
          "details": "Join 2203"
        }
      }
    }
  },
  "extensions": {}
}