How to output all OBS when Proc SQL statement is used with where ststement

[knveraraju91]

Dear,

I am trying to calculate number of subjects based on a condition.

With my code, I donot see all OBS in the output. How to get all OBS. Please help. Thank you

Code:

proc sql;

create table one as

select *, count(distinct id) as NS

from data1

where flag='Y';

quit;

Data1

id            flag

1               Y

1               Y

1               Y

2               Y

2               Y

3               

4                 

5                Y

6                

7                Y

output expected:

Data2

id            flag             NS

1               Y                4

1               Y                4

1               Y                 4

2               Y                 4

2               Y                4

3               

4                 

5                Y               4

6                

7                Y               4

output getting

Data1

id            flag             NS

1               Y                 4

1               Y                 4

1               Y                 4

2               Y                 4

2               Y                  4          

5                Y                 4           

7                Y                 4

[PGStats]

proc sql;
create table one as
select *, (select count(distinct id) from data1 where flag="Y") as NS
from data1;
quit;

[knveraraju91]

Thank you for the code. It worked.

How to include one more ststement as I have to calculate number of subjects by another variable(where AFLAG='Y') in same data step.

your code:

proc sql;
create table one as
select *, (select count(distinct id) from data1 where flag="Y") as NS
from data1;
quit;

[knveraraju91]

Thank you for the code. It worked.

How to include one more ststement as I have to calculate number of subjects by another variable(where AFLAG='Y') in same data step.

Your code

proc sql;
create table one as
select *, (select count(distinct id) from data1 where flag="Y") as NS
from data1;
quit;

[PGStats]

Experiment and understand how this query works. Extending it should then become obvious.

proc sql;
create table two as
select 
	*, 
	(select count(distinct id) from data1 where flag="Y") as NS,
	(select count(distinct id) from data1 where aflag="Y") as aNS
from data1;
quit;