如何将表中的HOURS和Minutes设置为时间戳

Question

Lets say I have a table which storing HOURS and MINUTES in two different column. For example:

HOURS|MINUTES 
------------------
1|11
2|22
3|33

How can I merge the hours and minutes in my table into current timestamp

My concept are as below

SELECT TRUNC(CURRENT TIMESTAMP) + HOURS + MINUTES FROM MYTABLE;

Answer 1

try this one

 select current timestamp + HOURS hour + MINUTES  minute 
 from sysibm.sysdummy1  

Answer 2

After several hours of trying i find out that i need to further enhance my table design, instead of storing minute and hours in different column, is better that i store in in single column. The sample value can be '18:36:00'

then use the following query to convert it

(SELECT CAST(? AS TIMESTAMP) + HOUR(TIME(END_TIMESTAMP)) HOURS + MINUTE(TIME(END_TIMESTAMP)) MINUTES FROM MY_TABLE