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 less (children 1)
    ExpressionList (children 2)
     Literal \'2020-10-15\'
     Identifier timestamp
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier timestamp
