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AddCollectionField()

This operation adds a new scalar field to an existing collection without recreating it. The field becomes available almost immediately with minimal delay due to internal schema synchronization.

func (c *Client) AddCollectionField(ctx context.Context, opt AddCollectionFieldOption, callOpts ...grpc.CallOption) error

Request Parameters

Parameter	Description	Type
ctx	Context for the current call to work.	context.Context
option	Optional parameters of the methods.	AddCollectionFieldOption
callOpts	Optional parameters for calling the methods.	grpc.CallOption

AddCollectionFieldOption

This is an interface type. The addCollectionFieldOption struct type implements this interface. You can use NewAddCollectionFieldOption() to get its concrete implementation.

func NewAddCollectionFieldOption(collectionName string, field *entity.Field) *addCollectionFieldOption

Parameter	Description	Type
collectionName	Name of the target collection.	string
field	The field to add.	*entity.Field

Return

Null

Example

package main

import (
    "context"
    "log"

    "github.com/milvus-io/milvus/client/v2/entity"
    "github.com/milvus-io/milvus/client/v2/milvusclient"
)

func main() {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()

    milvusAddr := "YOUR_CLUSTER_ENDPOINT"

    cli, err := milvusclient.New(ctx, &milvusclient.ClientConfig{
        Address: milvusAddr,
    })
    if err != nil {
        log.Fatal("failed to connect to milvus server: ", err.Error())
    }

    defer cli.Close(ctx)

    // the field to add
    // must be nullable for now
    newField := entity.NewField().WithName("new_field").WithDataType(entity.FieldTypeInt64).WithNullable(true)

    err = cli.AddCollectionField(ctx, milvusclient.NewAddCollectionFieldOption("customized_setup_2", newField))
    if err != nil {
        // handle error
    }
}