postgresql - 将间隔格式化为具有大量小时数的时间

Question

I have an interval that is calculated between events that can be days or hours between them.

Some rows show the desirable

00:15:38.687282

While other give me a worse-to-read

2 days 22:20:33.505085

How can I make the second example return the following?

70:22:33.505085

Thanks for any help.

Answer 1

Another solution:

select extract(epoch from interval '2 days 22:20:33.505085')/3600 * interval '1h';
┌─────────────────┐
│    ?column?     │
╞═════════════════╡
│ 70:20:33.505085 │
└─────────────────┘
(1 row)

Answer 2

You can build a custom representation with extract() :

floor(extract(epoch from val) / 60 / 60)
|| ':' || extract(minute from val)
|| ':' || extract(second from val)

Demo on DB Fiddle :

select 
    floor(extract(epoch from val) / 60 / 60)
    || ':' || extract(minute from val)
    || ':' || extract(second from val) display
from (values ('2 days 22:20:33.505085'::interval)) as t(val)

| display         |
| :-------------- |
| 70:20:33.505085 |

Answer 3

A quick and dirty solution:

SELECT
   extract(days from '2 days 22:20:33.505085'::interval) * interval '24 hour' + '22:20:33.505085'::interval

 ?column?     
-----------------
 70:20:33.505085

If you want to get more involved then that, account for months, years and so on then you will probably need to build a function.