>>>>1) Aleksey it is not the mouth of the truth.
>>>
>>>What it suppouse to mean? Are you saying that he is lying?
>>>
>>
>>No!
>>I say that it says what he thinks, but that what thinks is (for me) mistaken.
>
>You lost me totally. What he is mistaken about?

That the choice to search the names in the sourcetable
before the destination table is one chosen of possible design.

It is not possible to make this choice,
the list of the names of the fields destination must have priority.

it is like saying that the sum can be made before of the multiplication,
cannot be made because otherwise logic becomes incoherent and conflicting.

If this is a 100 years old standard then it is a 100 years old mistaken standard!

Fabio