* Vladimir Davydov <vdavydov.dev@xxxxxxxxx> [18/07/20 20:45]:
By now, replace function takes new tuple and old tuple as arguments, instead
of single txn_stmt. It has been done in order to avoid abusing txn_stmt:
the only usage was extracting tuples from it.
As a result, this function can be used by ephemeral tables
without any patching.