In SQL Server Management Studio, queries like this one:
SELECT * FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_NAME = [name_of_table];
can help find the name of the primary key, and I can easily find the name of the primary key in Object Explorer too, but I have yet to find way of identifying the table columns that uniquely determine the primary key. I have also consulted this particular answer, but "SHOW ..." within a query is always recognized as invalid on my end. Furthermore, the other queries suggested by that post were able to extract the name of my primary key (which I already have a means of obtaining as described at the beginning of this question), but I still don't know where to find the underlying columns that determine the primary key. Any ideas?