How do I use Groupby in SAS?

The GROUP BY clause groups data by a specified column or columns. When you use a GROUP BY clause, you also use an aggregate function in the SELECT clause or in a HAVING clause to instruct PROC SQL in how to summarize the data for each group. PROC SQL calculates the aggregate function separately for each group.

What is by Group Processing in SAS?

BY-group processing is a method of processing observations from one or more SAS data sets that are grouped or ordered by values of one or more common variables.

What is the by statement in SAS?

The BY statement is used in SAS to instruct the DATA step or procedures to process dataset observations in groups, rather than singly. It can be used whenever SAS data is ordered, or can be accessed in order through a SAS dataset index.

How do I sum a group in SAS?

Obtaining a Total for Each BY Group

include a PROC SORT step to group the observations by the Vendor variable.
use a BY statement in the DATA step.
use a Sum statement to total the bookings.
reset the Sum variable to 0 at the beginning of each group of observations.

How many statements does the given SAS program contain?

How many statements does the following SAS program contain? The five statements are: 1) the PROC PRINT statement (two lines long); 2) the VAR statement; 3) the WHERE statement (on the same line as the VAR statement); 4) the LABEL statement; and 5) the RUN statement (on the same line as the LABEL statement).

What is the class statement in SAS?

Specify REF=LAST to designate that the last ordered level serve as the reference. This option applies to all the variables specified in the CLASS statement. To specify different reference levels for different classification variables, use REF= options for individual variables. TRUNCATE.

What SAS statement is required to accumulate totals?

You can use the RETAIN statement to create an accumulating variable. The RETAIN statement is a compile-time-only statement that prevents SAS from reinitializing the variable at the top of the DATA step. Because the variable is not reinitialized, it retains its value across multiple iterations of the DATA step.

In which types of SAS steps are where statements allowed?

The WHERE statement can only be used in DATA steps that use existing SAS data set(s) as input, i.e., a SET, MERGE, or UPDATE statement must exist. If you are using an INPUT statement to read in “raw” files, then you cannot use WHERE.