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Method

The delete method allows you to remove vectors from the index based on their identifiers. The command accepts the following parameters:
  • ids: A list of identifiers of vectors to be deleted.
  • prefix: A string prefix to match vector IDs. All vectors with IDs that start with this prefix will be deleted.
  • filter: A metadata filter to match vectors to be deleted.
Only one of ids, prefix, or filter can be provided.
It returns the following field in response:
  • deleted: An integer indicating how many vectors were deleted with the command.

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Delete Example

from upstash_vector import Index

index = Index.from_env()

# Specify the identifiers of vectors to be deleted
ids_to_delete = ["id1", "id2", "id3"]

# Delete the specified vectors
delete_result = index.delete(ids=ids_to_delete)

# Display the number of vectors deleted
print("Number of Vectors Deleted:", delete_result.deleted)
Alternatively, you can delete a singular vector: 
index.delete("id-4")
Also, you can specify a namespace to operate on. When no namespace is provided, the default namespace will be used. 
index.delete("id-4", namespace="ns")

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Delete with metadata filter

This will delete all vectors with metadata that matches the provided filter. For more information, see Metadata Filtering. 
index.delete(filter="age > 30")

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Delete with id prefix

This will delete all vectors with IDs that start with the prefix. 
index.delete(prefix="id-")