How do I list all tables WITHOUT a primary key?

Run the following SQL code:

SELECT T.TABLE_NAME AS “Tables without PKs”
FROM INFORMATION_SCHEMA.TABLES AS T
WHERE NOT EXISTS
(SELECT *
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS AS TC
WHERE CONSTRAINT_TYPE = ‘PRIMARY KEY’
AND T.TABLE_NAME = TC.TABLE_NAME)
AND T.TABLE_TYPE = ‘BASE TABLE’