anchor.diff:          e.LastName <- employee.LastName
       )
       ctx.SubmitUpdates()
  +
  +let john = {
  +  Id = 1
  +  FirstName = "John"
  +  LastName = "Doe" }
  +
  +updateEmployee john
  +updateEmployee' john
   
   
   (**Finally it is also possible to specify a seq of `string * obj` which is exactly the 
  
positive.code: }
  
  let updateEmployee (employee: Employee2) =
      query {
          for p in ctx.Public.Employee2 do
          where (p.Id = employee.Id)
  
negative.code: 
  ctx.SubmitUpdates()
  
  (** update a single row
      assuming Id is unique
  *)
  
  type Employee2 = {
  