[英]Query on multiple collections at once (mongodb)
I'm not pretty sure could I do this.我不太确定我能做到这一点。 My application(buy and sell) have around five to ten categories eg: vehicles, real estate, and cloths
I thought of creating separate MongoDB collections for each category because each of the categories contains with different fields eg: vehicle[km, body type, brand], cloths[size, color, gender]
, This would be very easy to manage and scale.我的应用程序(买卖)大约有五到十个类别,例如: eg: vehicle[km, body type, brand], cloths[size, color, gender]
eg: vehicles, real estate, and cloths
eg: vehicle[km, body type, brand], cloths[size, color, gender]
,这将非常容易管理和缩放。
Now can I able to send one query to those multiple collections at once现在我可以一次向多个 collections 发送一个查询吗
eg: title
on all collections字段上的文本搜索, eg: title
server: nodejs服务器:nodejs
MongoDB 4.2 introduces wildcard indexes specifically for this use case. MongoDB 4.2 专门为此用例引入了通配符索引。
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