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Web Map Specification

Join Table DataSource

Join Table data source is the result of a join operation. Nested joins are supported. To use nested joins, set either leftTableSource or rightTableSource to be a joinTable.

Referenced by: dataSource


Property Details
joinType The type of join (left outer or left inner).
If property is present, must be one of the following values:
  • esriLeftInnerJoin
  • esriLeftOuterJoin
leftTableKey Field name from the left table.
leftTableSource The left source. If the leftTableSource is a table, the resulting joinTable is a table. If the leftTableSource is a layer, the resulting joinTable is a layer.
rightTableKey Field name from the right table.
rightTableSource The right table source.
type String value indicating the type for the dataSource.
Value of this property must be joinTable


  "dataSource": {
    "type": "joinTable",
    "leftTableSource": {
      "type": "mapLayer",
      "mapLayerId": 0
    "rightTableSource": {
      "type": "dataLayer",
      "dataSource": {
        "type": "table",
        "workspaceId": "MAP",
        "dataSourceName": "MAP.user1.TaxLots",
        "gdbVersion": "MAP.Version1"
    "leftTableKey": "STATE_FIPS",
    "rightTableKey": "FIPS",
    "joinType": "esriLeftOuterJoin"

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