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DROP COLLECTION

  • reference
  • Couchbase Server 7.0
    +
    The DROP COLLECTION statement enables you to delete a named collection from a scope.

    Syntax

    drop-collection ::= DROP COLLECTION [ [ namespace ':' ] bucket '.' scope '.' ] collection
    'DROP' 'COLLECTION' ( ( namespace ':' )? bucket '.' scope '.' )? collection
    namespace

    (Optional) An identifier that refers to the namespace of the bucket which contains the collection you want to delete. Currently, only the default namespace is available. If the namespace name is omitted, the default namespace in the current session is used.

    bucket

    (Optional) An identifier that refers to the bucket which contains the collection you want to delete.

    scope

    (Optional) An identifier that refers to the scope which contains the collection you want to delete.

    collection

    (Required) An identifier that refers to the name of the collection that you want to delete.

    If there is a hyphen (-) inside the bucket name, the scope name, or the collection name, you must wrap that part of the path in backticks (` `). For example, default:`travel-sample` indicates the travel-sample keyspace in the default namespace.

    Usage

    To specify the collection, you may do one of the following:

    • Include its full path, containing the namespace, bucket, and scope, followed by the collection name;

    • Include a relative path, containing just the bucket and scope, followed by the connection name;

    • Specify just the collection name without a path.

    When you specify a collection name without a path, you must set the query context to indicate the required namespace, bucket, and scope. If you specify a collection name by itself without setting a valid query context, an error is generated.

    Examples

    Example 1. Delete collection with full path

    This statement deletes a collection called city in the inventory scope within the travel-sample bucket.

    DROP COLLECTION `travel-sample`.inventory.city
    Query Context

    For the following example, you must first set the query context to `travel-sample`.inventory, using the Query Workbench or the cbq shell.

    • Query Workbench

    • CBQ Shell

    Use the query context drop-down menu to select travel-sample.inventory.

    The query context drop-down menu, with 'travel-sample.inventory' selected 
    \SET -query_context travel-sample.inventory;
    Example 2. Delete collection with query context

    Assuming that the query context is set, this statement deletes a collection called country in the inventory scope within the travel-sample bucket.

    DROP COLLECTION country;