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 ('Science Foundation Ireland (SFI)[06/IN.1/I85]; Solar Energy Conversion research cluster[07/SRC/B1160]; HEA; Intel Ireland; Irish Research Council for Science, Engineering and Technology embark initiative') ORA-01722: invalid number