Sum Rowwise data when the columnname is a date

[AdityaKir]

Hello,

I want to know how can we sum rowwise data in SAS when the columns are dates. Below is how my Excel file looks like?

Dress_ID	29/8/2013	31/8/2013	2/9/2013	4/9/2013	6/9/2013	8/9/2013
1006032852	2114	2274	2491	2660	2727	2887
1212192089	151	275	570	750	813	1066
1190380701	6	7	7	7	8	8
966005983	1005	1128	1326	1455	1507	1621
876339541	996	1175	1304	1396	1432	1559

I want to do sum row wise.

Regards,

Aditya

[Reeza · Accepted solution]

Use the SUM function.

Sum(var1, var2, ..., varN);

SAS doesn't allow variable names of that type. It will transform them when imported - it would be easier if you modified them manually so you have a system you understand. 

If you declare an array you can 

array date_vars(12) date1-date12;

total=sum( of date_vars(*));

There are other ways to list the variables based on the convention you choose. Search VARIABLE LIST on here or in SAS documentation. 

[RW9]

It is a good idea for you to import that data from Excel and show us what the dataset looks like.  That could be a picture for all I know, Excel has no structure or control so it is not possible to work from that point.  Once you have a dataset, look at what the variable names are, if they are imported as varX then your problem is a very simple one:

result=sum(of var:);

If they are not, then you may have work in manipulating the data into a useable format.

[AdityaKir]

Thanks for the help.

[LinusH]

Remember that SAS is not Excel. You'll be better off restructuring your data in a normalized way - by making a date column. Then you'll have lots possibilities to do any calculations you need. Summarization is usually a task for a report so you could use PROC PRINT if you wish to keep the details or TABULATE for aggregation only reports.