SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test
   Function lessOrEquals (children 1)
    ExpressionList (children 2)
     Function identity (children 1)
      ExpressionList (children 1)
       Identifier stamp
     Function toDate (children 1)
      ExpressionList (children 1)
       Literal NULL
