mongodb find 查询报错

Question

在mongo 命令行下执行如下查询

db.users.find({})

能正常的读取集合中的所有数据，
但是执行如下查询命令，则报错

db.users.find({loginname:'test'})

error: {
    "$err" : "Unable to execute query: error processing query: ns=im.users limit=0 skip=0\nTree: loginname == \"lidian\"\nSort: {}\nProj: {}\n No query solutions",
    "code" : 17007
}

mongodb 配置的副本集（Replica Set）

Answer 1

• There is no problem with the query statement. There should be an error somewhere else. Create a new table and test it

Answer 2

General query, no problem.

It’s no problem to check one.

Sir, you can check if there is a loginname field in your user collection.