What is LAG function?How is it used? can any one explain

Question Posted / gajari rao

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What is LAG function?How is it used? can any one explain..

Answer / sheetal

lag function is used to look at the previous values as :

lag(<varaiable name>); gives you the the previous value .

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What is LAG function?How is it used? can any one explain..

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

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What is LAG function?How is it used? can any one explain..

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

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