如题,会log issue:WARNING: Variable lbclsig already exists on file WORK.LB4.
请教大神,是什么原因!!!
code:
proc sql noprint;
create table lb4 as
select a.*,b.lbclsig
from lb3 as a left join lab_ as b
on a.usubjid=b.usubjid and a.parcat1=b.parcat1 and a.param=b.param and a.instancename=b.instancename;
quit;