reIndex（数据库命令）

定义

reIndex

自版本 6.0 起已弃用。

Attempting to run the reIndex command writes a warning message to the log.

提示

In mongosh, this command can also be run through the db.collection.reIndex() helper method.

Helper methods are convenient for mongosh users, but they may not return the same level of information as database commands. In cases where the convenience is not needed or the additional return fields are required, use the database command.

The reIndex command drops all indexes on a collection and recreates them. This operation may be expensive for collections that have a large amount of data and/or a large number of indexes.

警告

• reIndex may only be run on standalone instances.

• For most users, the reIndex command is unnecessary.

兼容性

此命令可用于以下环境中托管的部署：

• MongoDB Enterprise：基于订阅、自我管理的 MongoDB 版本

• MongoDB Community：源代码可用、免费使用且可自行管理的 MongoDB 版本

语法

该命令具有以下语法：

db.runCommand(
   {
     reIndex: <collection>
   }
)

命令字段

该命令接受以下字段：

行为

对于MongoDB5.0 或更高版本，reIndex 只能在独立运行的实例上运行。