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 ='DGISGPI (Spain)[MTM2005-03463]; Science Foundation Ireland[06/MI/005]; DGUIC[CCG07-UCM/ESP-2787]' ORA-01722: invalid number