AddCollectionField()

This operation adds a field to an existing collection.

Status AddCollectionField(const AddCollectionFieldRequest& request)

Request Syntax

auto request = AddCollectionFieldRequest()
    .WithDatabaseName(db_name)
    .WithCollectionName(collection_name)
    .WithField(field_schema);

REQUEST METHODS:

• WithDatabaseName(const std::string& db_name)

  Sets the target database name, use default database if it is empty.

• WithCollectionName(const std::string& collection_name)

  Sets the name of the collection.

• WithField([FieldSchema](FieldSchema.md)&& field_schema)

  Sets the field schema.

RETURNS:

Status

Check status.IsOk() to confirm success.

EXCEPTIONS:

• StatusCode

  Check status.Code() and status.Message() for error details.

Example

#include "milvus/MilvusClientV2.h"
auto client = milvus::MilvusClientV2::Create();

milvus::ConnectParam connect_param{"http://localhost:19530", "root:Milvus"};
auto status = client->Connect(connect_param);
if (!status.IsOk()) {
    std::cout << status.Message() << std::endl;
}

milvus::FieldSchema new_field_1 = milvus::FieldSchema()
                                      .WithName("new_1")
                                      .WithDataType(milvus::DataType::VARCHAR)
                                      .WithMaxLength(64)
                                      .WithNullable(true)
                                      .WithDefaultValue("default text");
status = client->AddCollectionField(
    milvus::AddCollectionFieldRequest().WithCollectionName(collection_name).WithField(std::move(new_field_1)));
if (!status.IsOk()) {
    std::cout << status.Message() << std::endl;
}

milvus::FieldSchema new_field_2 = milvus::FieldSchema()
                                      .WithName("new_2")
                                      .WithDataType(milvus::DataType::ARRAY)
                                      .WithElementType(milvus::DataType::INT16)
                                      .WithMaxCapacity(10)
                                      .WithNullable(true);
status = client->AddCollectionField(
    milvus::AddCollectionFieldRequest().WithCollectionName(collection_name).WithField(std::move(new_field_2)));
if (!status.IsOk()) {
    std::cout << status.Message() << std::endl;
}