ORA-01722: invalid number - select description from (SELECT NULL OBJECT_ID, ' -- Select Funding Body -- ' DESCRIPTION FROM DUAL UNION SELECT OBJECT_ID, BODY_NAME DESCRIPTION FROM VA_FUNDING_BODY WHERE SYSDATE BETWEEN START_DATE AND NVL(END_DATE, SYSDATE+1) ORDER BY 2) where object_id in ('University of Limerick, Enterprise Ireland[PC/259/2005]; Education Ministries of both Ireland and the Czech Republic; Czech Grant Agency[202/07/1289]') ORA-01722: invalid number