SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Function toDecimal64 (alias n1) (children 1)
     ExpressionList (children 2)
      Identifier number
      Literal UInt64_8
    Function toDecimal64 (alias n2) (children 1)
     ExpressionList (children 2)
      Function divide (children 1)
       ExpressionList (children 2)
        Identifier n1
        Literal UInt64_9
      Literal UInt64_4
    Function toDecimal64 (children 1)
     ExpressionList (children 2)
      Identifier n2
      Literal UInt64_2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_10