-- -- DATE -- CREATE TABLE DATE_TBL (f1 date); INSERT INTO DATE_TBL VALUES ('1957-04-09'); INSERT INTO DATE_TBL VALUES ('1957-06-13'); INSERT INTO DATE_TBL VALUES ('1996-02-28'); INSERT INTO DATE_TBL VALUES ('1996-02-29'); INSERT INTO DATE_TBL VALUES ('1996-03-01'); INSERT INTO DATE_TBL VALUES ('1996-03-02'); INSERT INTO DATE_TBL VALUES ('1997-02-28'); INSERT INTO DATE_TBL VALUES ('1997-02-29'); INSERT INTO DATE_TBL VALUES ('1997-03-01'); INSERT INTO DATE_TBL VALUES ('1997-03-02'); INSERT INTO DATE_TBL VALUES ('2000-04-01'); INSERT INTO DATE_TBL VALUES ('2000-04-02'); INSERT INTO DATE_TBL VALUES ('2000-04-03'); INSERT INTO DATE_TBL VALUES ('2038-04-08'); INSERT INTO DATE_TBL VALUES ('2039-04-09'); INSERT INTO DATE_TBL VALUES ('2040-04-10'); SELECT f1 AS "Fifteen" FROM DATE_TBL; SELECT f1 AS "Nine" FROM DATE_TBL WHERE f1 < '2000-01-01'; SELECT f1 AS "Three" FROM DATE_TBL WHERE f1 BETWEEN '2000-01-01' AND '2001-01-01'; -- -- Simple math -- Leave most of it for the horology tests -- SELECT f1 - date '2000-01-01' AS "Days From 2K" FROM DATE_TBL; SELECT f1 - date 'epoch' AS "Days From Epoch" FROM DATE_TBL; SELECT date 'yesterday' - date 'today' AS "One day"; SELECT date 'today' - date 'tomorrow' AS "One day"; SELECT date 'yesterday' - date 'tomorrow' AS "Two days"; SELECT date 'tomorrow' - date 'today' AS "One day"; SELECT date 'today' - date 'yesterday' AS "One day"; SELECT date 'tomorrow' - date 'yesterday' AS "Two days";