Hi All,
I have the dataset below which gives me details of account conversions at a sub account level.
data have;
input account_id $ Sub_no $ reporting_date conversion_date;
informat reporting_date conversion_date date9.;
format reporting_date conversion_date date9.;
cards;
12345 1 31JAN2018 .
12345 2 31JAN2018 .
12345 3 31JAN2018 .
67891 1 31JAN2018 .
67891 2 31JAN2018 .
12345 1 28FEB2018 28FEB2018
12345 2 28FEB2018.
12345 3 28FEB2018 .
67891 1 28FEB2018 .
67891 2 28FEB2018 28FEB2018
;
run;
What I need is to aggregate this data to show the below
Account_ID | Reporting Date | Conversion_Date |
12345 | 31-Jan-18 | . |
67891 | 31-Jan-18 | . |
12345 | 28-Feb-18 | 28-Feb-18 |
67891 | 28-Feb-18 | 28-Feb-18 |
I need to view 1 record per account number and reporting date irrespective of number of sub accounts the data has been aggregated from.
Many Thanks
Adnan
Two approaches, SQL and data step, that produce the same result:
data have;
input account_id $ Sub_no $ reporting_date conversion_date;
informat reporting_date conversion_date date9.;
format reporting_date conversion_date date9.;
cards;
12345 1 31JAN2018 .
12345 2 31JAN2018 .
12345 3 31JAN2018 .
67891 1 31JAN2018 .
67891 2 31JAN2018 .
12345 1 28FEB2018 28FEB2018
12345 2 28FEB2018.
12345 3 28FEB2018 .
67891 1 28FEB2018 .
67891 2 28FEB2018 28FEB2018
;
run;
proc sql;
create table want1 as
select account_id, reporting_date, max(conversion_date) as conversion_date format=date9.
from have
group by reporting_date, account_id;
quit;
data want2;
set have (rename=(conversion_date=_cvdate));
by reporting_date account_id;
retain conversion_date;
format conversion_date date9.;
if _cvdate ne . then conversion_date = _cvdate;
if last.account_id then output;
drop _cvdate sub_no;
run;
PROC SUMMARY will do this
UNTESTED CODE
proc summary data=have;
class account_id;
var reporting_date conversion_date;
output out=want min=;
run;
Two approaches, SQL and data step, that produce the same result:
data have;
input account_id $ Sub_no $ reporting_date conversion_date;
informat reporting_date conversion_date date9.;
format reporting_date conversion_date date9.;
cards;
12345 1 31JAN2018 .
12345 2 31JAN2018 .
12345 3 31JAN2018 .
67891 1 31JAN2018 .
67891 2 31JAN2018 .
12345 1 28FEB2018 28FEB2018
12345 2 28FEB2018.
12345 3 28FEB2018 .
67891 1 28FEB2018 .
67891 2 28FEB2018 28FEB2018
;
run;
proc sql;
create table want1 as
select account_id, reporting_date, max(conversion_date) as conversion_date format=date9.
from have
group by reporting_date, account_id;
quit;
data want2;
set have (rename=(conversion_date=_cvdate));
by reporting_date account_id;
retain conversion_date;
format conversion_date date9.;
if _cvdate ne . then conversion_date = _cvdate;
if last.account_id then output;
drop _cvdate sub_no;
run;
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