Under PostgreSQL, I\'m using PersistentDuration for the mapping between the sql type interval & duration but it doesn\'t work.
I have a table that defines time intervals. ___________________开发者_Python百科____________ id | description | start_date |
There is a time stamp column/field i开发者_如何转开发n a table, and the format is like 2009-12-05 10:35:28,
I\'m very new to Hadoop and I\'m currently trying to join two sources of data where the key is an interval (say [date-begin/date-end]). For example:
I am using开发者_开发知识库 C++ GDI+ to open a gif however I find the frame interval is really strange.
加载中,请稍侯......