I can't seem to get this to work.
Neither using just PROC SQL:
proc sql;
create table foo (
id char(10) primary key
);
create table bar (
id char(10) primary key,
constraint foo_bar_fkey foreign key(id) references foo on delete restrict on update restrict
);
quit;
Or with PROC SQL and PROC DATASETS using the overlapping foreign and primary key section as a guide:
proc sql;
create table foo (
id char(10)
);
create table bar (
id char(10)
);
quit;
proc datasets lib=work;
modify foo;
ic create primary key(id);
modify bar;
ic create foreign key(id) references foo on delete restrict on update restrict;
modify bar;
ic create primary key(id);
run;
Getting the same error message when trying to create the primary key for bar:
ERROR: An index named id with the same definition but different characteristics exists for file WORK.BAR.DATA.
SAS throws this error because you're trying to define ID in table BAR as both a Primary and Foreign key which is not possible.
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