> Do you know if it's possible to convert the mentioned prepared INSERT
> statement to String before executing it?

No.

> Is there a mechanism to do this, can I display the prepared statement as a
> String somehow?

Not yet. But you're the second person asking for this feature, so it seems
to be worth adding to the list.

> Or I should do a workaround - what do you suggest?

None exist. You have to cache the string before doing a prepare.

Roman