SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test
   Function lessOrEquals (children 1)
    ExpressionList (children 2)
     Identifier timestamp
     Literal \'2020-10-16\'
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier timestamp
