SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Function count (children 1)
     ExpressionList
    Function toString (children 1)
     ExpressionList (children 1)
      Identifier json.a
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test
   ExpressionList (children 1)
    Function toString (children 1)
     ExpressionList (children 1)
      Identifier json.a
   Set
