topic Re: create table with increasing dates in loop in SAS Programming

create table with increasing dates in loop

Irena_ik — Wed, 29 Apr 2020 19:24:21 GMT

Hi,

Maybe someone can help me with my case, I have one obs date '20APR2020' in table week0 and i need to create one table with 7 obs, '20APR2020','21APR2020','22APR2020' etc.

i try this but i doesn't work correctly

%macro sqlloop(start,end);
PROC SQL;

%DO i=&start. %TO &end.;
/* %let j=%eval(&i+1);*/
CREATE TABLE week%eval(&i+1) as

SELECT

intnx('day',day,&i.) as day format=date9.
FROM week&i. ;
/*union */
/*select * from ; */
%END;
QUIT;
%mend;

%sqlloop(start=0, end=7)

I need one table with values (for start I have only one date '20APR2020'):

'20APR2020'

'21APR2020'

'22APR2020'

'23APR2020'

.....

Thanks in advance

Re: create table with increasing dates in loop

ballardw — Wed, 29 Apr 2020 19:48:01 GMT

Are there any other variables involved? If so, what values should they have for the added rows?

Is your "date" a character variable or a SAS date value with the date9 format assigned? It isn't really clear.

Doesn't work is awful vague.

Are there errors in the log?: Post the code and log in a code box opened with the <> to maintain formatting of error messages.

No output? Post any log in a code box.

Unexpected output? Provide input data in the form of data step code pasted into a code box, the actual results and the expected results. Instructions here: https://communities.sas.com/t5/SAS-Communities-Library/How-to-create-a-data-step-version-of-your-dat... will show how to turn an existing SAS data set into data step code that can be pasted into a forum code box using the <> icon or attached as text to show exactly what you have and that we can test code against.

Often the data step is much easier to do something like add additional records based on an incrementing rule.

Below code shows creating 7 observation from scratch and adding 6 observations.

data want;
  day='20APR2020'd;
  output;
  do i=1 to 6;
   day = intnx('day',day,1);
   output;
  end;
  format day date9.;
  drop i;
run;
/* IF you actually have a dataset named week0
  with a date valued variable named day:
*/

data want;
  set week0;
  output;
  do i=1 to 6;
   day = intnx('day',day,1);
   output;
  end;
  format day date9.;
  drop i;
run;

Re: create table with increasing dates in loop

Irena_ik — Wed, 29 Apr 2020 20:07:35 GMT

It's exactly what I need!

Thank You very much 🙂