Hi All, I have a PPI table defined as like below, CREATE SET TABLE SAMPLE.TEST ,NO FALLBACK , NO BEFORE JOURNAL, NO AFTER JOURNAL, CHECKSUM = DEFAULT, DEFAULT MERGEBLOCKRATIO ( EMP_ID INTEGER, DATE_ID INTEGER NOT NULL, DATE_F DATE NOT NULL ) PRIMARY INDEX PI_TEST ( EMP_ID ) PARTITION BY RANGE_N(CAST(DATE_ID AS DATE) BETWEEN DATE '2013-04-01' AND '2014-12-31' EACH INTERVAL '1' DAY , NO RANGE); DATE_ID is sourced from DATE_F column(just DATE --> INTERGER conversion). As we have users query this table frequently using the integer column DATE_ID. In PPI definition, we are casting an INTEGER column to DATE and storing. My question: Would this approach result equal or better performance gain compared to having the PPI defined on DATE_F column without casting and advising the users to use DATE_F column instead of DATE_ID column? If yes/no please explain!