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  • Python

index()

This operation gets the specified index of the current collection.

Request Syntax

index(
    **kwargs
)

PARAMETERS:

  • __kwargs - __

    Additional keyword arguments.

    • index_name (str) -

      The name of the index. If no index is specified, the default index name is used.

      A default index name is in the following format: _default_idx_{field_id}.

RETURN TYPE:

Index

RETURNS:

An Index object of the current collection.

EXCEPTIONS:

  • IndexNotExistException

    This exception will be raised when the specified index does not exist.

  • AmbiguousIndexName

    This exception will be raised when multiple indexes exist but no index name has been specified.

Examples

from pymilvus import Collection, CollectionSchema, FieldSchema, DataType

schema = CollectionSchema([
    FieldSchema("id", DataType.INT64, is_primary=True),
    FieldSchema("vector", DataType.FLOAT_VECTOR, dim=5)
])

# Create a collection
collection = Collection(
    name="test_collection",
    schema=schema
)

# Create an index on a scalar field
collection.create_index(
    field_name="id"
)

# Set the index parameters
index_params = {
    "index_type": "IVF_FLAT",
    "metric_type": "COSINE",
    "params": {
        "nlist": 128
    }
}

# Create an index on the vector field
collection.create_index(
    field_name="vector", 
    index_params=index_params, 
    timeout=None
)

# Check the index
collection.has_index() # True

# list all index names
collection.indexes

# [<pymilvus.orm.index.Index at 0x12045f910>,
# <pymilvus.orm.index.Index at 0x12045d0d0>]

# Get a specific index object
collection.index(index_name="_default_idex_101")

# <pymilvus.orm.index.Index at 0x1205b8690>