replace with last observation data

[davidnamh]

Hello, I would like to replace value in the amount with last observation amount value when only the description is "r" or "ra" within same account. Could you please help me how to do that ? Thank you so much !

data have;

infile datalines delimiter=',';

input account description $ amount;

datalines;

123,a,0

123,a,0

123,r,1    /**<- replace with last value (30) when "r" or "ra" */

123,r,20   /**<- replace with last value (30) when "r" or "ra" */

123,ra,30

123,w,4

234,b,1

234,c,20

234,ra,400  /**<- replace with last value (200) when "r" or "ra" */

234,r,200

234,c,200

;

run;

data want;

infile datalines delimiter=',';

input account description $ amount;

datalines;

123,a,0

123,a,0

123,r,30

123,r,30

123,ra,30

123,w,4

234,b,1

234,c,20

234,ra,200

234,r,200

234,c,200

;

run;

[TarunKumar]

there is huge diff in input data and ouput data. pls check and pos your requirement again.

for eg 123,r,30 and 234,r,300 is not avilable in have data set.

[davidnamh]

HI TarunKumar,

I have updated my codes for your review. Thanks !

[pradeepalankar · Accepted solution]

data have;

infile datalines delimiter=',';

input account description $ amount;

datalines;

123,a,0

123,a,0

123,r,1

123,r,20

123,ra,30

123,w,4

234,b,1

234,c,20

234,ra,400

234,r,200

234,c,200

;

run;

data test;

set have(where =(description in ('r','ra')));

by account;if last.account then output ;run;

proc sql;

update have 

set amount=(select amount from test where test.account=have.account )

where have.description in ('r','ra');

quit;

[davidnamh]

Thank you so much pradeepalankar !