在IF语句中使用sysdate避免每时每刻

Question

I am trying to write an IF statement in my procedure to avoid my procedure running at the top of the hour. The job scheduler that I am using does not have the flexibility to avoid running at the top of the hour for some reason. Anyone have anything out there already they can share? So for example if it is 8:00 I want the IF statement to stop the procedure from executing.......but if its 8:15 then no problem go ahead and run.

Answer 1

You can extract the minutes like that:

SELECT EXTRACT(minute FROM systimestamp) FROM DUAL;

or, more traditionally

SELECT TO_CHAR(sysdate,'MI') FROM DUAL;

Your procedure would then look like:

CREATE OR REPLACE PROCEDURE myproc IS
BEGIN
  IF EXTRACT(minute FROM systimestamp) > 0 THEN
    NULL; 
    -- here goes your code
  END IF;
END myproc;
/