InsertQuery   (children 2)
 Identifier b_customers
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 4)
    ExpressionList (children 2)
     Identifier number
     Function multiply (children 1)
      ExpressionList (children 2)
       Identifier number
       Literal UInt64_20000000
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier system.numbers
    Literal UInt64_2
    Literal UInt64_100000
