Defining a foreign key on a table in PROC SQL that is also the primary key

tomcmacdonald — Thu, 28 Jun 2018 17:35:12 GMT

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:

http://support.sas.com/documentation/cdl/en/lrcon/62955/HTML/default/viewer.htm#a000403555.htm#a002573254

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.

Re: Defining a foreign key on a table in PROC SQL that is also the primary key

Patrick — Sun, 01 Jul 2018 02:11:29 GMT

@tomcmacdonald

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.

topic Defining a foreign key on a table in PROC SQL that is also the primary key in SAS Programming

Defining a foreign key on a table in PROC SQL that is also the primary key

Re: Defining a foreign key on a table in PROC SQL that is also the primary key