Remove duplicate in dataset

[Melvin_Sas]

I need some help to delete few rows from the below table based on some conditions.

For some IDs  for a Year the table has two entries one with value in the amt field and other is empty.

I have to delete the records of the IDs which has more than 1 entry for a year and the amt field is empty.

Please help.

ID	Year	Amt
70000031	2009	.
70000031	2010	.
70000031	2011	.	Needs to Be Deleted
70000031	2011	526.2906
70000031	2012	.
70000031	2013	200
70000031	2014	.
70000031	2015	.
70000031	2016	.	Needs to Be Deleted
70000031	2016	119
70000895	2009	.
70000895	2010	100
70000895	2011	.
70000895	2012	.	Needs to Be Deleted
70000895	2012	2186.864
70000895	2013	.
70000895	2014	.
70000895	2015	.	Needs to Be Deleted
70000895	2015	340.2716
70000895	2016	.
70000895	2017	6789

[art297 · Accepted solution]

If you don't have multiple records for a given id and year that contain non-missing amounts, then the update statement would be your easiest solution. e.g.:

data want;
  update have (obs=0) have;
   by id year;
run;

Art, CEO, AnalystFinder.com