SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function arrayJoin (children 1)
     ExpressionList (children 1)
      Function distinctDynamicTypes (children 1)
       ExpressionList (children 1)
        Identifier json.a2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_json_dynamic_aggregate_functions
   Function equals (children 1)
    ExpressionList (children 2)
     Function dynamicType (children 1)
      ExpressionList (children 1)
       Identifier json.a2
     Literal \'String\'
