I inherited a program with an existing querry that works by continually applying changes to a temp table in proc sql but generates warning messages. Here is the simplest part of that process:
proc sql;
...
create table tempds as
select a.*,b.wantedcol
from tempds as a, othertable as b
where a.fkey1=b.sfkey1 and a.key2=b.key2;
quit;
an example of the warning: WARNING: This CREATE TABLE statement recursively references the target table. A consequence of this is a possible data integrity problem.
I want to fix this and stay within proc sql even though I could handle this specific example in a data step since I have more sql querries to fix.
This is my attempt to fix, but I am doing something wrong between the SET statement and the FROM statement. I'm sure there is some slight syntax change I need but I cant figure out what needs updating
PROC SQL;
...
ALTER TABLE tempds
ADD wantedcol num(3);
UPDATE tempds
SET wantedcol=b.wantedcol
FROM tempds a join othertable b
WHERE a.fkey=b.sfkey and a.key2=b.key2;
quit;
The error is the following at the FROM keyword: ERROR 22-322: Syntax error, expecting one of the following: ;, !!, *, **, +, ',', -, /, WHERE, ||.
This is sas 9.4.
I'm using these 2 links as reference, and maybe sas's sql syntax is a bit different for the FROM keyword:
https://documentation.sas.com/doc/en/vdmmlcdc/8.1/sqlproc/n1hz0uhw57yye2n16m5r103jjpjj.htm
https://learn.microsoft.com/en-us/answers/questions/1166695/add-column-to-table-and-populate-from-another-tabl
Thanks,
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