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20.3.3.1 Create, List, and Drop Collections
In MySQL Shell, you can create new collections, get a list of the existing collections in a schema, and remove an existing collection from a schema. Collection names are case-sensitive and each collection name must be unique.
Confirm the Schema
To show the value that is assigned to the schema variable, issue:
mysql-js> db
If the schema value is not Schema:world_x,
then set the db variable by issuing:
mysql-js> \use world_x
To create a new collection in an existing schema, use the
db object's
createCollection() method. The following
example creates a collection called flags
in the world_x schema.
mysql-js> db.createCollection("flags")The method returns a collection object.
<Collection:flags>
To display all collections in the world_x
schema, use the db object's
getCollections() method. Collections
returned by the server you are currently connected to appear
between brackets.
mysql-js> db.getCollections()
[
<Collection:countryinfo>,
<Collection:flags>
]
To drop an existing collection from a schema, use the
db object's
dropCollection() method. For example, to
drop the flags collection from the world_x
schema, issue:
mysql-js> db.dropCollection("flags")
The dropCollection() method is also used in
MySQL Shell to drop a relational table from a schema.
See Collection Objects for more examples.
Document created the 26/06/2006, last modified the 26/10/2018
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