This function send a notification when a new action was done to the table. Is there a way to send a notification only when the table was full and no future actions (insertion of new rows for examples) will be done. I was connected to an external api and saving the data received from it to a postgres database and I want to be notified when the table was full and no rows will be inserted. Does it realizable or Should I create a trigger and listens for every insertion and notify the client?