SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 3)
    Identifier name
    Identifier value
    Identifier changed
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.settings
   Function in (children 1)
    ExpressionList (children 2)
     Identifier name
     Literal Tuple_(\'allow_experimental_analyzer\', \'enable_analyzer\')
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier name
