Hi,
Currently am generating the report for the processing month (06/01/2011- 07/01/2011)
and need to select the greatest pidate data from the processing month.
For example,
ID NAME PIDATE
1234 david 04/22/2011
3456 roy 07/10/2011
4567 yak 06/15/2011
8976 ron 06/29/2011
From above i need to select a PIDATE within the processing month (06/01/2011- 07/01/2011)
and the greatest pidate value (i.e 06/29/2011)
Output should be,
8976 ron 06/29/2011
Please let me know how to apply this logic by using proc sql.
Thanks in advance.
Something like this should work (untested code):
SELECT * FROM <data>
WHERE pidate BETWEEN '01jun2011'd AND '30Jun2011'd
AND pidate=(SELECT max(pidate) FROM <data> WHERE pidate BETWEEN '01jun2011'd AND '30Jun2011'd );
A couple of notes:
-- the BETWEEN operator is inclusive, so I modified your dates.
-- this is a correlated subquery, so performance can be poor in large datasets (see documentation).
Doc Muhlbaier
Duke
Avoid the correlated subquery
select *
from demo
where pidate BETWEEN '01jun2011'd AND '30Jun2011'd
having pidate EQ max(pidate);
This does employ remerging.
Doc@Duke wrote:
Something like this should work (untested code):
SELECT * FROM <data>
WHERE pidate BETWEEN '01jun2011'd AND '30Jun2011'd
AND pidate=(SELECT max(pidate) FROM <data> WHERE pidate BETWEEN '01jun2011'd AND '30Jun2011'd );
A couple of notes:
-- the BETWEEN operator is inclusive, so I modified your dates.
-- this is a correlated subquery, so performance can be poor in large datasets (see documentation).
Doc Muhlbaier
Duke
Thanks Howles for your help..
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