Round up SYSDATE just but its HOUR. SQL ORACLE

Question

Any ideas how to round up SYSDATE.

For example, sysdate right now is 11.31 , and i want it to round up to 12.00 , but i expect the output to be just 12 , and if the Sysdate is 11.29 , the output is 11 .

Thanks

Answer 1

Use ROUND function and after that TO_CHAR .

select to_char(round(to_date('11:31','hh24:mi'), 'HH'), 'HH24') from dual

-> 12

select to_char(round(to_date('11:29','hh24:mi'), 'HH'), 'HH24') from dual

-> 11

Answer 2

ROUND((SYSDATE-TRUNC(SYSDATE))*24)

Explanation: TRUNC without 2nd parameter makes the 00:00:00 time of the current date. By subtraction we get the difference (in days), then scale it to hours and round.