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 ('IRCSET[RS/06/167]; Science Foundation Ireland through Lero-the Irish Software Engineering Research Centre[03/CE2/I303_1]; Christian Doppler Forschungsgesellschaft, Austria; Siemens VAI Metals Technologies') ORA-01722: invalid number