发布于 2015-09-14 14:47:07 | 125 次阅读 | 评论: 0 | 来源: 网络整理
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Call this method on a query to override MongoDB’s default index selection and query optimization process. The argument is an index specification, like the argument to ensureIndex(). Use db.collection.getIndexes() to return the list of current indexes on a collection.
也可以参考
“$hint“