SQL is telling me that my use of the YEAR function is not valid.Can anyone tell me why? How can I query for multiple years?Here is my query:SELECT a.RECIP_SSN_NBR, char(b.recip_retir_dt, USA), sum(a.OBLIG_TOT_AMT) AS TOTAL year(a.OBLIG_CREAT_DT) FROM DSNP.PR01_T_OBLIG_CMPNT a, DSNP.PR01_T_RECIP_SYS b WHERE a.RECIP_SSN_NBR=b.RECIP_SSN_NBR AND a.CMPNT_TYPE_CD = '42' AND YEAR(a.OBLIG_CREAT_DT) IN (2009, 2010, 2011)and b.benef_stat_cd in ('AC', 'DP')and b.recip_retir_dt2 is NULLand b.benef_seq_nbr = 1GROUP BY a.RECIP_SSN_NBR, b.recip_retir_dt, year(a.OBLIG_CREAT_DT)The query works if I use = to a specific year, but with multiple years.