SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 3)
    Function argMax (alias col1) (children 1)
     ExpressionList (children 2)
      Identifier col1
      Identifier timestamp
    Function argMax (alias col2) (children 1)
     ExpressionList (children 2)
      Identifier col2
      Identifier timestamp
    Function divide (alias final_col) (children 1)
     ExpressionList (children 2)
      Identifier col1
      Identifier col2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier ttttttt
   ExpressionList (children 1)
    Identifier col3
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier final_col
