Answer / smm

Rename specifies new names for variables in output SAS data
sets

Label assigns descriptive labels to variables

Answer / chandra

Rename permanently changes the variable name and where as
lable gives the label to the variable

Answer / vishal

Rename will overwrite the values in data portion and lable
displays in descriptor portion just for printing

Answer / vinod

Rename allows up to 64 characters only but label allows up
to 256 characters.when we use rename option we can't find
the old name of the variable in the contents procedure,but
in case of label we can see the old name & descriptive
label name of that particular variable.

Answer / mahesh

yes
i agree with above answers
rename changes the total name of variable it will disturb
the source

label also changes the variable descriptive information of
the variable it won't disturb the source

Answer / sachin

Rename is modification of previous names into new one
and Lable is which gives more clarification for data.

Answer / srinivas,korasavada

Rename specifies new names for variables in output SAS data
sets and you can give 8 charecters only.

Label specifies new description upto 256 charecters and it
will appear in dataset not in output.

Answer / gopi

1) rename can be used as statement or dataset option to
change the name of variable.
2) label, if used as a statement it changes or assigns label
to a variable and if used as a dataset option it changes or
assigns label to the dataset.

Reaname:

a) If you use rename data set option for input dataset, then
SAS renames the variable name in Input dataset.

Data new;
x=1;
y=2;
run;

Data ren ;
set new(rename=(x=z));
run;
This will create ren dataset with z and y variables, and you
can use z varible in the same data step if you want to do
any calculations.


b) If you use rename data set option for output dataset,
then SAS renames the variable in output dataset.
Data new;
x=1;
y=2;
run;

Data ren (rename=(x=z));
set new;
run;
This will create ren dataset with z and y variables, and you
can not use z varible in the same data step if you want to
do any calculations.



3)You can use Rename as statement also, in which case it
effects only output dataset. i.e you can not use the renamed
variable in same data step in calculations

Label:
a) If you use label statement in data step, it assigns or
changes the label name for a variable permanently.
b) If you use label statement in proc step, it assigns or
changes the lable name for a variable temporarily for that
proc step.
c) If you use label as dataset option it assigns label to
the dataset, but not the variable.

Answer / subhashish nanda

Rename is used to change the variable name, while label
option is used to change the dataset name.
For Ex:

data ds1 (rename=(sex=gender sal=income));
infile datalines;
input id name$ sex$ age salary;
datalines;
001 abc m 23 45000
002 def f 34 67000
003 mno m 21 36000
;
run;

data ds2(label=sample);
infile datalines;
input id name$ sex$ age salary;
datalines;
001 abc m 23 45000
002 def f 34 67000
003 mno m 21 36000
;
run;

Here label option changes the dataset name as sample. So
dataset will be as per label i.e. sample, but when we will
open it we will view as ds2.

Answer / kumarravi111

Rename changes the variables name in data set , where as
lable gives descriptive explaining of variable

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i have multiple .csv files in a unix directory. every file is having variable names as header.even for empty file also. suppose take 3 files a.csv b.csv c.csv a.csv contains data as name;age,salary; raja;34;4000; ravi;33;5000; kumar;25;3000; b.csv contains data as name;age,salary; ajay;40;4500; and c.csv contains name;age,salary; (only headers) Now i want to import and append all these files in to a single dataset. i tried infile statement with *.csv to import all at a time. but i m not getting correct data. please help me . its urgent. thank you in advance

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