drop_alias()

This operation drops a specified collection alias.

Request syntax

drop_alias(
    alias: str,
    timeout: float | None
) -> None

PARAMETERS:

• alias (str) -

  [REQUIRED]

  The alias of a collection.

  Before this operation, ensure that the alias exists. Otherwise, exceptions will occur.

• timeout (float | None)

  The timeout duration for this operation.

  Setting this to None indicates that this operation timeouts when any response arrives or any error occurs.

RETURN TYPE:

NoneType

RETURNS:

None

EXCEPTIONS:

• MilvusException

  This exception will be raised when any error occurs during this operation, especially when you set alias to a non-existing alias.

• BaseException

  This exception will be raised when this operation fails.

Example

from pymilvus import MilvusClient

# 1. Create a milvus client
client = MilvusClient(
    uri="http://localhost:19530",
    token="root:Milvus"
)

# 2. Create a collection
client.create_collection(collection_name="test_collection", dimension=5)

# 3. Create an alias for the collection
client.create_alias(collection_name="test_collection", alias="test")

# 4. Drop the alias
client.drop_alias(alias="test")

Related methods

• alter_alias()

• create_alias()

• describe_alias()

• list_aliases()