Note
Changed in MongoDB 4.2
MongoDB removes the index name length limit of 127 byte maximum.
The default name for the index consists of each indexed field name
concatenated with _text. For example, the following command creates
a text index on the fields content, users.comments, and
users.profiles:
db.collection.createIndex( { content: "text", "users.comments": "text", "users.profiles": "text" } )
The default name for the index is:
"content_text_users.comments_text_users.profiles_text"
Specify a Name for text Index
You can pass the name option to the
db.collection.createIndex() method:
db.collection.createIndex( { content: "text", "users.comments": "text", "users.profiles": "text" }, { name: "MyTextIndex" } )
Use the Index Name to Drop a text Index
Whether the text index has the default name
or you specified a name for the text index,
to drop the text index, pass the index name
to the db.collection.dropIndex() method.
For example, consider the index created by the following operation:
db.collection.createIndex( { content: "text", "users.comments": "text", "users.profiles": "text" }, { name: "MyTextIndex" } )
Then, to remove this text index, pass the name "MyTextIndex" to the
db.collection.dropIndex() method, as in the following:
db.collection.dropIndex("MyTextIndex")
To get the names of the indexes, use the
db.collection.getIndexes() method.