Question

到目前为止，我在couchdb中创建的所有视图都使用了键中的数值。在键上添加字母字符时，我有点意外。

我的观点是按预期返回值：

[2011,12,5,14,22,"foo"]
[2011,12,5,14,23,"foo"]
[2011,12,5,14,42,"bar"]
[2011,12,5,15,2,"foo"]
[2011,12,5,15,21,"foo"]
[2011,12,5,15,23,"foo"]
[2011,12,5,16,2,"foo"]
[2011,12,5,16,21,"foo"]
[2011,12,5,16,23,"foo"]
[2011,12,5,16,42,"bar"]

但是，当我使用以下开头键查询这些内容时：

    [2011,12,5,14,16,"foo"]

和

的结束键

[2011,12,5,16,60,"foo\ufff0"]


http://couchdb_host:5984/the_db/_design/cf/_view/errors?startkey=[2011,12,5,14,16,%22foo%22]&endkey=[2011,12,5,16,60,%22foo\ufff0%22]&group_level=6

我不断在结果中获得“bar”的值：

    {"rows":[
{"key":[2011,12,5,14,22,"foo"],"value":2},
{"key":[2011,12,5,14,23,"foo"],"value":1},
{"key":[2011,12,5,14,42,"bar"],"value":1},
{"key":[2011,12,5,15,2,"foo"],"value":1},
{"key":[2011,12,5,15,21,"foo"],"value":2},
{"key":[2011,12,5,15,23,"foo"],"value":1},
{"key":[2011,12,5,16,2,"foo"],"value":1},
{"key":[2011,12,5,16,21,"foo"],"value":2},
{"key":[2011,12,5,16,23,"foo"],"value":1},
{"key":[2011,12,5,16,42,"bar"],"value":1}
]}

我在哪里摔倒？我希望忽略“bar”，并以“foo”开头的任何东西都要返回。这一切在纸上看起来都很简单！

线索？

Answer 1

CouchDB返回的所有键的排序都高于（或等于）startkey和小于（或等于）endkey。 [2011,12,5,14,42，“bar”]的排序高于[2011,12,5,14,16，“foo”]因为42高于16并且排序低于[2011,12,5， 16,60，“foo \ ufff0”]因为42低于60。

此页面描述了密钥的排序方式：http://wiki.apache.org/couchdb/View_collation

CouchDB视图模式匹配组合键中的数字和Alpha

1 个答案: