topic proc sql left join with case when created variable in SAS Programming

proc sql left join with case when created variable

buddha_d — Tue, 05 Dec 2017 06:22:44 GMT

dear community,

I am trying to join 3 tables using proc sql and i have to use a variable (field) that I created with case when condition (as variable1). I need to merge this new variable1 to the 3rd table and sas is throughing off an error that it can't locate the variable1 (as it is created and not there on the 3 datasets). How can I join using the newly created variable?

eg;

proc sql;

create table new as

select a.*, case when (a.statuses=' ') and (a.reasons='') then a.check
when a.statuses =' ' then a.check_bp
else a.statuses end as current_status,b.height,c.weight

from one as a left join two as b

on (a.id=b.id)

left join three as c

on (current_status=c.status); quit;

ERROR: The following columns were not found in the contributing tables: current_status.

thanks in advance

Re: proc sql left join with case when created variable

LinusH — Tue, 05 Dec 2017 07:13:49 GMT

Try to use the CALCULATED key word.

Re: proc sql left join with case when created variable

buddha_d — Tue, 05 Dec 2017 12:31:41 GMT

thank you LinusH for replying. It didn't work with calculated. I had to create a view with another select statement and pick it from there to join the tables.

proc sql;

create view v_new as

select case when (a.statuses=' ') and (a.reasons='') then a.check
when a.statuses =' ' then a.check_bp
else a.statuses end as current_status,id

from one a;

create table new as

select a.*, v.current_status,b.height,c.weight

from one as a left join two as b

on (a.id=b.id)

left join v_new as v

on (b.id=v.id)

left join three as c

on (v.current_status=c.status); quit;

thanks,