对于下面的查询 SQL: SELECT * FROM TableA as A LEFT JOIN TableB as B ON (A.id = B.id AND A.name =B.name) Mongo: TableA.aggregate([ "from": "TableB", "foreignField": "_i
我正在查看,当您滚动到"A replicaset connect using no default and readPreference for辅助“部分时
它声明了一个到副本集的连接字符串,如下所示:MongoClient.connect("mongodb://localhost:30000,localhost:30001/integration_test_?我想MongoDB文档已经声明副本集对客户端是透明的。这意味着,客户端只需要连接到主副本集,MongoDB