HasCollection()

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

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

Request Syntax

option := milvusclient.NewHasCollectionOption(collectionName)

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

PARAMETERS:

• option (HasCollectionOption)

  The options for checking the collection. Use NewHasCollectionOption to construct.

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.

EXCEPTIONS:

• error

  Check err != nil for failure details.

Example

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: "127.0.0.1:19530"})
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)