Hi Experts,
I want to left join two tables (table A and table B).
Table A
Date_ID | ID | Flag |
20190202 | 14715 | Y |
20190203 | 14715 | Y |
20190204 | 14715 | Y |
20190202 | 888 | Y |
20190203 | 888 | Y |
Table B
Date_ID | ID | CID |
20190202 | 14715 | 222 |
20190203 | 14715 | 222 |
20190204 | 14715 | 222 |
20190202 | 14715 | 333 |
20190203 | 14715 | 333 |
20190204 | 14715 | 333 |
20190202 | 1295128 | 444 |
20190203 | 1295128 | 444 |
20190204 | 1295128 | 444 |
Code I'm using
data w(drop=rc);
if _N_ = 1 then do;
dcl hash h(dataset : "a",hashexp : 20);
h.definekey("ID","DATE_ID");
h.definedata("ID","Flag");
h.definedone();
end;
set b;
if 0 then set a;
rc = h.find(key : ID, key : DATE_ID);
run;
Table W (What I am getting)
Date_ID | ID | CID | Flag |
20190202 | 14715 | 222 | Y |
20190203 | 14715 | 222 | Y |
20190204 | 14715 | 222 | Y |
20190202 | 14715 | 333 | Y |
20190203 | 14715 | 333 | Y |
20190204 | 14715 | 333 | Y |
20190202 | 1295128 | 444 | Y |
20190203 | 1295128 | 444 | Y |
20190204 | 1295128 | 444 | Y |
Table W (what I am expecting)
Date_ID | ID | CID | Flag |
20190202 | 14715 | 222 | Y |
20190203 | 14715 | 222 | Y |
20190204 | 14715 | 222 | Y |
20190202 | 14715 | 333 | Y |
20190203 | 14715 | 333 | Y |
20190204 | 14715 | 333 | Y |
20190202 | 1295128 | 444 | |
20190203 | 1295128 | 444 | |
20190204 | 1295128 | 444 |
Please help me correct error in my code.
Thanks in advance.
Try this
data w(drop=rc);
if _N_ = 1 then do;
dcl hash h(dataset : "a",hashexp : 20);
h.definekey("ID","DATE_ID");
h.definedata("ID","Flag");
h.definedone();
end;
set b;
if 0 then set a;
call missing(flag);
rc = h.find(key : ID, key : DATE_ID);
run;
Try this
data w(drop=rc);
if _N_ = 1 then do;
dcl hash h(dataset : "a",hashexp : 20);
h.definekey("ID","DATE_ID");
h.definedata("ID","Flag");
h.definedone();
end;
set b;
if 0 then set a;
call missing(flag);
rc = h.find(key : ID, key : DATE_ID);
run;
Anytime
Instead of
if 0 then set a;
set the required attributes (length of flag) in the _n_ = 1 block.
Are you ready for the spotlight? We're accepting content ideas for SAS Innovate 2025 to be held May 6-9 in Orlando, FL. The call is open until September 25. Read more here about why you should contribute and what is in it for you!
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.