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delete()

Addedv2.3.xModifiedv2.5.x

This operation deletes entities by their IDs or with a boolean expression.

delete(data): Promise<MutationResult>

Request Syntax

This method has the following alternatives.

With DeleteByIdsReq

milvusClient.delete({
   db_name: string,
   collection_name: string,
   partition_name?: string,
   ids: string[] | number[],
   consistency_level: string,
   timeout?: number
 })

PARAMETERS:

• db_name (string) -

  The name of the database that holds the target collection.

• collection_name (string) -

  [REQUIRED]

  The name of an existing collection.

• partition_name (string) -

  The name of an existing partition in the collection.

• ids (string[] | number[]) -

  [REQUIRED]

  A specific entity ID or a list of entity IDs.

  The value defaults to None, indicating that a scalar filtering condition applies.

• consistency_level (ConsistencyLevelEnum) -

  The consistency level of the target collection. The value defaults to Bounded (1) with options of Strong (0), Bounded (1), Session (2), and Eventually (3).

• timeout (number) -

  The timeout duration for this operation.

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

RETURNS Promise<MutationResult>

With DeleteByFilterReq

milvusClient.delete({
   db_name: string,
   collection_name: string,
   partition_name?: string,
   filter: string,
   exprValues?: keyValueObject,
   consistency_level?: string,
   timeout?: number
 })

PARAMETERS:

• db_name (string) -

  The name of the database that holds the target collection.

• collection_name (string) -

  [REQUIRED]

  The name of an existing collection.

• partition_name (string) -

  The name of an existing partition in the collection.

• filter (string) -

  A scalar filtering condition to filter matching entities.

  The value defaults to an empty string, indicating that no condition applies. Setting both ids and filter results in a ParamError exception.

  You can set this parameter to an empty string to skip scalar filtering. To build a scalar filtering condition, refer to Boolean Expression Rules.

• consistency_level (ConsistencyLevelEnum) -

  The consistency level of the target collection. The value defaults to Bounded (1) with options of Strong (0), Bounded (1), Session (2), and Eventually (3).

• timeout (number) -

  The timeout duration for this operation.

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

RETURNS Promise<MutationResult>

Example

Python

const milvusClient = new milvusClient(MILUVS_ADDRESS);
 const resStatus = await milvusClient.delete({
   collection_name: 'my_collection',
   ids: [1,2,3,4]
 });

Java

const milvusClient = new milvusClient(MILUVS_ADDRESS);
 const resStatus = await milvusClient.delete({
   collection_name: 'my_collection',
   filter: 'id in [1,2,3,4]'
 });