What is LAG function?How is it used? can any one explain
- 3 Answers
- 19227 Views
- TRE, Verinon Technology Solutions, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sheetal
lag function is used to look at the previous values as :
lag(<varaiable name>); gives you the the previous value .
| Is This Answer Correct ? | 15 Yes | 2 No |
Answer / basha
hai gajari
this is basha from chennai no phones no mails why? what
happened man?
ok lets see answer
lag function returns value from que
ex:-
data gajari;
input chindhi 8. @@;
datalines;
1 2 3 4 5
;
run;
data rao;
set gajari;
chore=lag(chindhi);
run;
output:-
obs chndhi chore
1 1 .
2 2 1
3 3 2
4 4 3
5 5 4
ok bye
take care
basha
TVS F&S
| Is This Answer Correct ? | 9 Yes | 0 No |
Answer / naveen
this Question was raised by saddi soorath....
lag function enables you to have the previous value.
we have the following data
Name num
Naveen 1
Naveen 2
Basha 1
Basha 2
so in data step
if u give num1 =lag(num) you will have the following result
Name num num1
Naveen 1 .
Naveen 2 1
Basha 1 .
Basha 2 1
Thanks and regards
| Is This Answer Correct ? | 3 Yes | 0 No |
How would you delete observations with duplicate keys?
You need to perform an analysis on a massive dataset by groups, but are unable to sort the data due to memory constraint. How would you accomplish the task?
What is shift table? have you ever created shift that?
2 Answers Accenture, Clinical Research, Quintiles,
In SAS how to read the variable values having different formats. eg:mar99,mar1999 (in a single variable)
8 Answers GSK GlaxoSmithKline,
How could i automate the code in the scenario:Every month one new data set will be created for that perticular month transaction list.Now i would like to update the data in the source table by appending every month data automatically. jan---set jan; feb---set jan feb; mar---set jan mar;
Explain the special input delimiters used in sas programming.
how to extract data from SAP servers? Is like oracle servers or any other methods to extract please reply me.
Baseline definition in your study
3 Answers Accenture, Quintiles,
Mention the difference between ceil and floor functions in sas?
What is the difference between %local and %global?
What is proc sql pass through facility?
what is enterprise guide? What is the use of it? : Sas programming
Teradata 
