Find the Missing Values from Expected Values - Oracle/SQL

SELECT STATE
FROM
(
SELECT 'KS' AS STATE FROM DUAL UNION
SELECT 'WA' FROM DUAL UNION
SELECT 'OH' FROM DUAL UNION
SELECT 'MI' FROM DUAL UNION
SELECT 'IN' FROM DUAL UNION
SELECT 'AZ' FROM DUAL UNION
SELECT 'CO' FROM DUAL UNION
SELECT 'MO' FROM DUAL UNION
SELECT 'IA' FROM DUAL UNION
SELECT 'IL' FROM DUAL UNION
SELECT 'ND' FROM DUAL UNION
SELECT 'TX' FROM DUAL UNION
SELECT 'WI' FROM DUAL UNION
SELECT 'MN' FROM DUAL UNION
SELECT 'OR' FROM DUAL
) A
where STATE not in ( select STATE from SCHEMA.TABLE )

or You can Create table with Above rows and select the State from the that table.