TO_TIMESTAMP比较

Question

SELECT  lastmoddate
        , to_timestamp(lastmoddate,'DD-MON-YYYY HH:MI:SS:FF AM')
        , cast(current_timestamp - interval '60' day as TIMESTAMP)
FROM table 
WHERE primaryKeyColumn = 12141969;

返回：

SELECT problemid
       , lastmoddate
       , to_timestamp(lastmoddate,'DD-MON-YYYY HH:MI:SS:FF AM')
       , cast((current_timestamp - 60) as TIMESTAMP)
FROM table 
WHERE primaryKeyColumn = 12141969
and to_timestamp(lastmoddate,'DD-MON-YYYY HH:MI:SS:FF AM') < cast((current_timestamp - 60)  as TIMESTAMP);

返回：

我不知道8月25日要比8月19日少。

Answer 1

感谢所有人，尤其是戈登，加里。你们钉了它。当我运行to_CHAR（lastmoddate，'DD-MON-YYYY HH24：MI'）时，我注意到它在Year中存储了0018。这解决了我的问题