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SAS - Program a string variable containing a date

Posted on 2006-06-14
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Last Modified: 2010-04-17
Hello,

I'm pretty new to SAS programming, so forgive me if this question is pretty green...

I want to do something like this:

%let pddata = between '01-jan-2005' and '31-dec-2005';

However, I want to do this so that it generates this variable dynamically using date functions.

Any ideas?

Thanks!
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Question by:vadnick
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5 Comments
 
LVL 4

Expert Comment

by:tobydavid
ID: 16903650
To dynamically get information into a SAS Symbol like &pddata, use the SYMPUT Function

as in the following:

Data _null_;
date1 = ...
date2 = ...
call Symput('Pddata','between ' || date1 || ' and ' || date2);
run;

. . .

TITLE1 Important Stuff Pertaining to  the Period:  &Pddata ;
0
 

Author Comment

by:vadnick
ID: 16905525
Would you be able to write the exact code?  

With my original statement, I can have a line in a proc sql that reads

...
where a.date_of_purchase &pddata
...

Expanded, this is interpretted as

...
where a.date_of_purchase between '01-JAN-2005' and '12-31-2005'
...

So far, I'm able to get the dynamic code to return the following:

...
where a.date_of_purchase between '       16437' and '       16801'
...
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LVL 4

Accepted Solution

by:
tobydavid earned 50 total points
ID: 16945329
Sorry for the delay, here is the code.  I could not find what you wanted as a standard SAS Format, so I created one with PROC FORMAT.

proc format;
Picture MyDate
  low-high='%d-%b-%Y%0y' (datatype=date);
data _null_;
date1 = put(date(),MyDate.);
date2 = put(date(),MyDate.);
call symput('PDData',"between '" || date1 || "' and '" || date2 || "'");
run;
%put &pddata;



0
 

Author Comment

by:vadnick
ID: 17177991
Thanks, that worked perfectly.  I'll have to study the code to see how it works.
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LVL 4

Expert Comment

by:tobydavid
ID: 17178049
You are welcome.  Let me know if you have any questions.
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