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问题描述

我有这个问题,我认为我需要做多次(两次)mapreduce才能获得预期的结果。在CouchDB中可以吗?如果不是,则
还有其他数据库引擎可能支持此功能吗?

I have this problem that I think would require me to do multiple(two) mapreduces to get the expected result. Is this possible in CouchDB? If not, Aare there other database engines that might support this?

推荐答案

>。您可以尝试,该托管支持map-reduce链接,但是这将您锁定在该平台中,据我所知。

No. You could try Couldant hosting, which support map-reduce chaining, but that would lock you into that platform, as far as I can tell.

如果可以接受延迟,则可以使用异步过程将视图数据反馈回CouchDB作为第二个视图的输入。

If a delay is acceptable, you may use an asynchronous process to feed the view data back into CouchDB as input for the second view.

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08-24 03:36