错误代码 11000 和 11001 之间的 MongoDB 区别
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MongoDB difference between error code 11000 and 11001
提问by Prinzhorn
According to this HIGHLY incompletelist http://www.mongodb.org/about/contributors/error-codes/they're both related to duplicate keys. But I was not able to get a 11001 error. All of the following threw a 11000 error:
根据这个高度不完整的列表http://www.mongodb.org/about/contributors/error-codes/它们都与重复键有关。但是我无法收到 11001 错误。以下所有内容都抛出了 11000 错误：
- inserting a document with an
_idthat already existed - inserting a document with duplicate fields where the fields had a compound unique index
- updating a document with said compound unique index
- 插入一个
_id已经存在的文档 - 插入具有重复字段的文档，其中字段具有复合唯一索引
- 使用所述复合唯一索引更新文档
So this goes completely against the linked page, which says 11000 is for _idand 11001 would occur on updates (not inserts).
所以这完全违背了链接页面，它说 11000 用于_id更新（而不是插入）而 11001 会发生。
So my question is: When does 11001 occur?
所以我的问题是：11001 什么时候发生？
回答by Derick
The code 11001does not exist in the 2.5/2.6 branch on GitHub, so if you're trying a 2.5 version than you can't create it. I did have a look at the code, but I can't find any path that shows the 11001code either directly.
该代码11001在 GitHub 上的 2.5/2.6 分支中不存在，因此如果您尝试使用 2.5 版本，则无法创建它。我确实看过代码，但我找不到任何11001直接显示代码的路径。
The following few lines will show code 11001:
以下几行将显示代码11001：
db.so.drop();
db.so.insert( { foo: 5 } );
db.so.ensureIndex( { foo: 1 }, { unique: true } );
db.so.insert( { foo: 6 } );
The expected 11000:
预期11000：
db.so.insert( { foo: 5 } );
E11000 duplicate key error index: test.so.$foo_1 dup key: { : 5.0 }
And now to reach the 11001:
现在到达11001：
db.so.insert( { foo: 6 } );
db.so.update( { foo: 6 }, { $set: { foo: 5 } } );
E11000 duplicate key error index: test.so.$foo_1 dup key: { : 5.0 }
Still the original 11000, but:
仍然是原始的11000，但是：
db.getPrevError();
{
"err" : "E11000 duplicate key error index: test.so.$foo_1 dup key: { : 5.0 }",
"code" : 11001,
"n" : 0,
"nPrev" : 1,
"ok" : 1
}
That the original textual error message shows E11000is a bug: https://jira.mongodb.org/browse/SERVER-5978
原始文本错误消息显示E11000是一个错误：https: //jira.mongodb.org/browse/SERVER-5978
回答by nimrodm
Mongo has an ErrorCategoryenum which creates a DUPLICATE_KEY_ERRORfor the following error codes:
Mongo 有一个ErrorCategory枚举，它DUPLICATE_KEY_ERROR为以下错误代码创建一个：
private static final List<Integer> DUPLICATE_KEY_ERROR_CODES = Arrays.asList(11000, 11001, 12582);
The above is from mongodb java driver 3.6.4.
以上来自mongodb java driver 3.6.4。
So both refer to duplicate keys.
所以两者都是指重复的键。
