topic Re: how to use proc sql max(date) please in SAS Procedures

how to use proc sql max(date) please

septemberbulb — Tue, 17 Jan 2017 16:58:41 GMT

Hello,

I am a sas beginner. I try to sorted by application_number and appstatusdate:

and get the following result: for example for one application_number:

1009226470 .................. 19May2016:15:45:07

1009226470 .................. 19May2016:15:49:15

I omited some varables in the middle. I am now trying to keep the lastest result. but I can not use If last. because it will only keep 1 obs. for the example above, I try to keep the last date 10May2016:15:49:15, but it has multiple obs. how can I code that? someone told me use date=max(date). I tried but full of errors. Can anyone help one this please? Thanks very much.

Re: how to use proc sql max(date) please

Shmuel — Tue, 17 Jan 2017 17:10:52 GMT

What code did you try to test ?

Re: how to use proc sql max(date) please

ballardw — Tue, 17 Jan 2017 18:19:49 GMT

What is your desired result? Show the result.

And when discussing this with SAS users that is a datetime value you are showing. Which is very different than a date. In SAS terms one is measured in seconds (time or datetime) and the other days (date). So you can get very unexpected results when applying a rule for a "date" to "datetime" values.

Re: how to use proc sql max(date) please

septemberbulb — Tue, 17 Jan 2017 19:00:15 GMT

I sorted by the appstatusdate in the datetime format and hope to keep the last datetime which in this example is four obs. How can keep the last datetime even they have multiples? thx

Re: how to use proc sql max(date) please

LinusH — Tue, 17 Jan 2017 19:00:57 GMT

You could use the having max(appstatusdate) = appstatusdate constrict in SQL.

Re: how to use proc sql max(date) please

septemberbulb — Tue, 17 Jan 2017 19:01:40 GMT

I currently use proc sql by application_number, appstatusdate. I don't know use wich statement to keep the lastest datetime.

Re: how to use proc sql max(date) please

septemberbulb — Tue, 17 Jan 2017 19:27:50 GMT

Thank you very much. I have a long way to learn.