使用开始键、结束键和数组键搜索

我有一个视图,它返回几个带有数组键的元素。
例子:

{"total_rows":4,"offset":0,"rows":[
    {"id":"","key":[15,"2"],"value":1,"doc":{},
    {"id":"","key":[20,"2"],"value":1,"doc":{},
    {"id":"","key":[20,"3"],"value":1,"doc":{},
    {"id":"","key":[20,"4"],"value":1,"doc":{}
]}

/database/_design/element/_view/all/?
  startkey=[15, "2"]&
  endkey=[20, "3"]&
  include_docs=true&reduce=false

实例: http://jchris.couchone.com/keyhuh/_design/Record/_view/by_CreationDate_and_BoreholeName?startkey=[1267686720,%22sp4%22]&endkey=[1267686725,%22sp4

这个不行。它返回所有的记录,即使是最后一条,它不符合数组的第二个元素。

奇怪的是,它只适用于字符串。
例子:

{"total_rows":4,"offset":0,"rows":[
    {"id":"","key":["15","2"],"value":1,"doc":{},
    {"id":"","key":["20","2"],"value":1,"doc":{},
    {"id":"","key":["20","3"],"value":1,"doc":{},
    {"id":"","key":["20","4"],"value":1,"doc":{}
]}

/database/_design/element/_view/all/?
  startkey=["15", "2"]&
  endkey=["20", "3"]&
  include_docs=true&
  reduce=false

实例: http://jchris.couchone.com/keyhuh/_design/Record/_view/by_Client_and_BoreholeName?startkey=[%22Test1%22,%22sp4%22]&endkey=[%22Test1%22,%22sp4 \u9999%22]&include\u docs=true&reduce=假

在这里,它可以很好地工作,只返回前三个元素。

couchdb搜索带有整数和字符串的数组时,我遗漏了什么吗?还是我掉进虫子里了?