HasCollection

This operation checks whether a collection exists in the connected Milvus instance.

go

func (c *Client) HasCollection(ctx context.Context, option HasCollectionOption, callOptions ...grpc.CallOption) (has bool, err error)

Request Syntax

Creates the request for HasCollection().

go

option := milvusclient.NewHasCollectionOption(collectionName)

result, err := client.HasCollection(ctx, option)

PARAMETERS:

• name (string) -

  [REQUIRED]

  The name of the collection to create.

BUILDER METHODS:

• NewHasCollectionOption(name string)

  Creates options to check whether a collection exists. name specifies the collection to check.

RETURN TYPE:

has bool, err error

RETURNS:

A boolean indicating whether the collection exists. Returns an error if the operation fails.

PARAMETERS:

• result (has bool) -

  The has bool value returned by HasCollection().

ERROR HANDLING:

• error

  The operation fails. Check err != nil for failure details.

Example

Demonstrates HasCollection() usage.

go

import (
	"context"
	"fmt"

	"github.com/milvus-io/milvus/client/v3/milvusclient"
)

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

cli, err := milvusclient.New(ctx, &milvusclient.ClientConfig{Address: "YOUR_CLUSTER_ENDPOINT"})
if err != nil {
	// handle error
}
defer cli.Close(ctx)

result, err := cli.HasCollection(ctx, milvusclient.NewHasCollectionOption("books"))
if err != nil {
	// handle error
}
fmt.Println(result)