# How to Calculate the Sum by Group in SAS

You can use the following methods to calculate the sum of values by group in SAS:

Method 1: Calculate Sum by One Group

```proc sql;
select var1, sum(var2) as sum_var2
from my_data
group by var1;
quit;
```

Method 2: Calculate Sum by Multiple Groups

```proc sql;
select var1, var2, sum(var3) as sum_var3
from my_data
group by var1, var2;
quit;```

The following examples show how to use each method with the following dataset in SAS:

```/*create dataset*/
data my_data;
input team \$ position \$ points;
datalines;
A Guard 15
A Guard 12
A Guard 29
A Forward 13
A Forward 9
A Forward 16
B Guard 25
B Guard 20
B Guard 34
B Forward 19
B Forward 3
B Forward 8
;
run;

/*view dataset*/
proc print data=my_data;``` ### Example 1: Calculate Sum by One Group

The following code shows how to calculate the sum of points by team:

```/*calculate sum of points by team*/
proc sql;
select team, sum(points) as sum_points
from my_data
group by team;
quit;
``` From the output we can see that players on team A scored a total of 94 points and players on team B scored a total of 109 points.

### Example 2: Calculate Sum by Multiple Groups

The following code shows how to calculate the sum of points, group by team and position:

```/*calculate sum of points by team, grouped by team and position*/
proc sql;
select team, position, sum(points) as sum_points
from my_data
group by team, position;
quit;``` The resulting table shows the sum of points scored by players based on their team and position.