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hellind
Quartz | Level 8

I have a dataset with Account Number that can be enrolled in a program. The data-set is monthly data. If it is enrolled the Enrolled_Flag = 1 else it is 0.

 

An account can only be enrolled at most once. How would I detect data issues with the file?

 

Account AAAA is okay, enrolled in second month.

Account_Number, Year_Month, Enrolled_Flag

AAAA, 202101, 0

AAAA, 202102,1

AAAA, 202103,1

 

 

Account BBBB is okay, enrolled and derollled in 4th month

Account_Number, Year_Month, Enrolled_Flag

1

1

1

0

 

Account CCC is okay always enrolled

1

1

1

1

 

Account DDDD is NOT okay, enrolled in 2nd month and then then enrolled in 4th month.

0

1

0

1

1

 

1 REPLY 1
s_lassen
Meteorite | Level 14

Something like this, I think:

data want;
  set have;
  by account enrolled notsorted;
  if first.account then
    n=enrolled;
  else if first.enrolled then
    n+enrolled;
  if last.account;
  if n>1 then
    flag='ERROR';
  else 
flag=' '; keep account flag; run;

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