?????????? ?????????????????????????????????????????????????? ?????????????????????????????????????????????????????? ????????????????????????????????????????????????????? ?????????? ????? ??????????????????????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????? ?????????????????

Returns the time stamp of the last transaction replayed in the course of Restoration. This is the time at which the commit or abort WAL history for that transaction was created on the principal. If no transactions happen to be replayed throughout recovery, the perform returns NULL.?????? ???????????????????????????????is specified (in milliseconds)