Get name of primarykey columns of a table in SQL server

Get names of all primarykey columns of a table in SQL server.

select c.COLUMN_NAME

from INFORMATION_SCHEMA.TABLE_CONSTRAINTS pk ,

INFORMATION_SCHEMA.KEY_COLUMN_USAGE c

where pk.TABLE_NAME = 'TBL_NAME'

and CONSTRAINT_TYPE = 'PRIMARY KEY'

and c.TABLE_NAME = pk.TABLE_NAME

and c.CONSTRAINT_NAME = pk.CONSTRAINT_NAME