SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.one (alias l)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier system.one
     TableJoin