How to create summary statistics for each value of a variable using proc sql?

[Shradha1]

I have a transaction dataset with customer number, merchant category, transaction amount, online flag, and domestic/overseas flag.

Merchant category has different observations like Dining, Apparel, Games, Grocery, electronics etc.

Now for each of these merchant categories, I want to get the total amount spent, total number of online transactions, and total number of overseas transaction for each customer. Ex:  For Dining, there will be 3 variables: Total amount spent on dining, total number of online transactions for dining, and total numbe rof overseas dining transactions.

So, for 5 different merchant categories, there will be 3 variable each, so total 15 variables in the final dataset, at a customer level.

How do I do this rather than having to write 15 'Case When' statements in proc sql?

[PaigeMiller]

This is a job for PROC SUMMARY

proc summary data=have nway;
    class merchant_category;
    var amount num_transactions num_overseas_transactions;
    output out=_stats_ sum=/autoname;
run;