topic Re: Reading the last record of a large table in SAS Programming

Reading the last record of a large table

sivakarthik — Mon, 22 Aug 2016 15:00:19 GMT

I would like to populate the last record of a variable as a new variable

Input

Sno Closing Price

1 10

2 10.5

3 10.2

4 10.4

5 10.6

Output:

Sno Closing Price New_Closing Price

1 10 10.6

2 10.5 10.6

3 10.2 10.6

4 10.4 10.6

5 10.6 10.6

I would like to obtain this output using both a datastep as well as a proc sql if possible.

Thank you much in advance.

Re: Reading the last record of a large table

Haikuo — Mon, 22 Aug 2016 15:17:29 GMT

Here is one way,

data have;
	input Sno Closing_Price;
	cards;
1        10
2         10.5
3          10.2
4          10.4
5          10.6
;
run;

data want;
	if _n_=1 then
			set have (rename=closing_price=new_closing keep=Closing_Price) nobs=nobs point=nobs;
			
	set have;
run;

Re: Reading the last record of a large table

LinusH — Tue, 23 Aug 2016 13:41:21 GMT

Two "why's":

why both SQL and data step?
Why do you want to add this value to all rows (the requirement...)?