topic Re: Proc SQL: Calculate the number of hours between two time variables with separate date variables? in SAS Programming

Proc SQL: Calculate the number of hours between two time variables with separate date variables?

ebills — Mon, 08 Aug 2016 20:20:09 GMT

Hello,

I'm trying to calculate the number of hours between two time variables in Proc SQL. That calculation is easy enough, but the obstacle I'm facing is the span between days. For instance, if an event happened on the 8th at 11:00pm and ended on the 9th at 4:00am, I want it to give me 5 hours. I have a beginning date (date9.) variable, an ending date (date9.) variable and the two (time10.) time variables (beginning/ending).

Would I need to aggregate these to create datetime variables and then proceed to do the intck calculation from there?

Any help is appreciated! Thanks!

Re: Proc SQL: Calculate the number of hours between two time variables with separate date variables?

GreggB — Mon, 08 Aug 2016 20:36:55 GMT

Look at the 6th example here:

http://support.sas.com/documentation/cdl/en/lefunctionsref/63354/HTML/default/viewer.htm#p1md4mx2crzfaqn14va8kt7qvfhr.htm

Re: Proc SQL: Calculate the number of hours between two time variables with separate date variables?

Reeza — Mon, 08 Aug 2016 20:48:18 GMT

I would create a datetime variable using DHMS using your two variables and then subtract the two which would give me the difference in seconds.

Assuming SAS dates and time values:

dhms(date1, 0, 0, time1) - dhms(date2, 0, 0, time2) as duration_seconds

Re: Proc SQL: Calculate the number of hours between two time variables with separate date variables?

ebills — Mon, 08 Aug 2016 21:23:14 GMT

Thanks Reeza. This got me what I wanted.

dhms(event_end_date,0,0,(input(event_end_time, time.))) - dhms(event_begin_date,0,0,(input(event_begin_time, time.)))
format =time8. as duration,