Oracle日期在两个日期之间

Question

I'm looking for rows where Date_Created is greater than 15 minutes ago, back to 4 days ago

This works:

where h.Date_Created < (Sysdate - interval '15' minute) and h.Date_Created > (Sysdate - 4)   

This also works:

where h.Date_Created <= (Sysdate - interval '15' minute) and h.Date_Created >= (Sysdate - 4);  

This returns no rows:

where h.Date_Created between (Sysdate - interval '15' minute) and  (Sysdate - 4); 

Date_Created was defined as type "date".

Why doesn't this "between" statement not work the same as the previous query (it's not an issue of inclusive of the boundaries).

Answer 1

Sysdate - 4必须是第Sysdate - 4

where h.Date_Created between (Sysdate - 4) and (Sysdate - interval '15' minute) ;