InsertQuery   (children 3)
 Identifier modify_sample_replicated
 ExpressionList (children 2)
  Identifier x
  Identifier y
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 2)
     Function toUInt8 (alias x) (children 1)
      ExpressionList (children 1)
       Identifier number
     Function toUInt64 (alias y) (children 1)
      ExpressionList (children 1)
       Identifier number
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier system.numbers
    Literal UInt64_256
