SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Identifier col1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test1_00395
   Function isNotNull (children 1)
    ExpressionList (children 1)
     Identifier col1
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier col1