dropAllRolesFromDatabase¶

Definition定义¶

dropAllRolesFromDatabase¶

Deletes all user-defined roles on the database where you run the command.

Warning

The dropAllRolesFromDatabase removes all user-defined roles from the database.

The dropAllRolesFromDatabase command takes the following form:

{
  dropAllRolesFromDatabase: 1,
  writeConcern: { <write concern> },
  comment: <any>
}

The command has the following fields:

Field字段	Type类型	Description描述
dropAllRolesFromDatabase	integer	Specify 1 to drop all user-defined roles from the database where the command is run.
writeConcern	document	Optional.可选。The level of write concern for the removal operation. The writeConcern document takes the same fields as the getLastError command.
comment	any	Optional.可选。A user-provided comment to attach to this command. Once set, this comment appears alongside records of this command in the following locations: mongod log messages, in the attr.command.cursor.comment field. Database profiler output, in the command.comment field. currentOp output, in the command.comment field. A comment can be any valid BSON type (string, integer, object, array, etc). New in version 4.4.版本4.4中的新功能。

Required Access¶

You must have the dropRole action on a database to drop a role from that database.

Example示例¶

The following operations drop all user-defined roles from the products database:

use products
db.runCommand(
   {
     dropAllRolesFromDatabase: 1,
     writeConcern: { w: "majority" }
   }
)

The n field in the results document reports the number of roles dropped:

{ "n" : 4, "ok" : 1 }