BookmarkSubscribeRSS Feed
🔒 This topic is solved and locked. Need further help from the community? Please sign in and ask a new question.
eagles_dare13
Obsidian | Level 7

I have:

proc sql;

select COL1, count(distinct COL2 ) as cnt from TBL group by COL1;

quit;

If TBL contains:

col1  col2

A    

A     XX

Then my output says:

col1  cnt

A     1

But the cnt should be 2. Why is it neglecting the null value?

1 ACCEPTED SOLUTION

Accepted Solutions
Ksharp
Super User

set a value to missing value if you need it.

data TBL;
input col1 $  col2 $;
cards;
A    .
A     XX
;
run;

proc sql;
select COL1, count(distinct  coalescec(COL2,'......' )) as cnt from TBL group by COL1;
select COL1, (count(distinct COL2)+(sum(missing(col2)) ne 0)) as cnt from TBL group by COL1;

quit;


Xia Keshan

Message was edited by: xia keshan

View solution in original post

4 REPLIES 4
slchen
Lapis Lazuli | Level 10

Count function in proc sql only count nonmissing value of column.

stat_sas
Ammonite | Level 13

This will include null value also

proc sql;

select col1,count(*) from have

group by col1;

quit;

slchen
Lapis Lazuli | Level 10

Here count function count row number of dataset.

Ksharp
Super User

set a value to missing value if you need it.

data TBL;
input col1 $  col2 $;
cards;
A    .
A     XX
;
run;

proc sql;
select COL1, count(distinct  coalescec(COL2,'......' )) as cnt from TBL group by COL1;
select COL1, (count(distinct COL2)+(sum(missing(col2)) ne 0)) as cnt from TBL group by COL1;

quit;


Xia Keshan

Message was edited by: xia keshan

sas-innovate-2024.png

Join us for SAS Innovate April 16-19 at the Aria in Las Vegas. Bring the team and save big with our group pricing for a limited time only.

Pre-conference courses and tutorials are filling up fast and are always a sellout. Register today to reserve your seat.

 

Register now!

SAS Enterprise Guide vs. SAS Studio

What’s the difference between SAS Enterprise Guide and SAS Studio? How are they similar? Just ask SAS’ Danny Modlin.

Find more tutorials on the SAS Users YouTube channel.

Click image to register for webinarClick image to register for webinar

Classroom Training Available!

Select SAS Training centers are offering in-person courses. View upcoming courses for:

View all other training opportunities.

Discussion stats
  • 4 replies
  • 8423 views
  • 0 likes
  • 4 in conversation