How-to list all foreign keys in sql server 2008

SOURCES:
Pinal Dave's blog - SQL SERVER – Query to Display Foreign Key Relationships and Name of the Constraint for Each Table in Database

-- LIST ALL FOREIGN KEYS

--select s.name from sysobjects s where type = 'F' 

SELECT

K_Table = FK.TABLE_NAME ,

FK_Column = CU.COLUMN_NAME,

PK_Table = PK.TABLE_NAME,

PK_Column = PT.COLUMN_NAME,

Constraint_Name = C.CONSTRAINT_NAME

FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS C

INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS FK ON C.CONSTRAINT_NAME = FK.CONSTRAINT_NAME

INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS PK ON C.UNIQUE_CONSTRAINT_NAME = PK.CONSTRAINT_NAME

INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE CU ON C.CONSTRAINT_NAME = CU.CONSTRAINT_NAME

INNER JOIN (

SELECT i1.TABLE_NAME, i2.COLUMN_NAME

FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS i1

INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE i2 ON i1.CONSTRAINT_NAME = i2.CONSTRAINT_NAME

WHERE i1.CONSTRAINT_TYPE = 'PRIMARY KEY'

) PT ON PT.TABLE_NAME = PK.TABLE_NAME

---- optional filter by table name:

-- and PK.TABLE_NAME='Functionality' and FK.TABLE_NAME='TestCase'

--WHERE PK.TABLE_NAME IN ('Functionality', 'TestCase')

--WHERE FK.TABLE_NAME IN ('Functionality', 'TestCase')

ORDER BY

1,2,3,4