SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Function dynamicType (children 1)
     ExpressionList (children 1)
      Identifier json.a2
    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
   ExpressionList (children 1)
    Function dynamicType (children 1)
     ExpressionList (children 1)
      Identifier json.a2
   ExpressionList (children 1)
    OrderByElement (children 1)
     Function dynamicType (children 1)
      ExpressionList (children 1)
       Identifier json.a2
