Would be nice if someone knows some examples for my "Query".
If have an Collection with Prices and Timestamps, i have to query for the records withe the newest timestamp "only".
I could query for all records sorted by timestamp and do an second query with the newest timestamp from the result, but i suppose this is not the best way (500.000 records). Does someone knows an good way to do this with mongoDB and PHP5?
分享 If you are using a standard, auto-generated default '_id' primary field, that is timestamp based. Getting a single (limit(1)) in descending order will be the most recent document.
Beyond that, depends on the schema you are using.
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AuthenticationFailed：分片MongoDB上的用户文档中缺少MONGODB-CR凭据：无法连接到：queryrouter0.example.com:27017：
laravel
mongodb
php
