SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function if (children 1)
     ExpressionList (children 3)
      Function in (alias in_expression) (children 1)
       ExpressionList (children 2)
        Identifier dummy
        Subquery (children 1)
         SelectWithUnionQuery (children 1)
          ExpressionList (children 1)
           SelectQuery (children 1)
            ExpressionList (children 1)
             Literal UInt64_1
      Identifier in_expression
      Literal UInt64_22
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.one
