查询指定 Collection

def describe_collection(
    database_name: str,
    collection_name: str,
    timeout: float | None = None
) -> RPCCollection

# 查询 Base 类数据库下的集合
res = client.describe_collection(database_name='db-test', collection_name='book-emb')
print(vars(res)) 

{
    "database": "db-test",
    "collection": "book-emb",
    "replicaNum": 2,
    "shardNum": 1,
    "description": "this is a collection of test embedding",
    "indexes": [
        {
            "fieldName": "id",
            "fieldType": "string",
            "indexType": "primaryKey"
        },
        {
            "fieldName": "author",
            "fieldType": "string",
            "indexType": "filter"
        },
        {
            "fieldName": "vector",
            "fieldType": "vector",
            "indexType": "HNSW",
            "dimension": 768,
            "metricType": "COSINE",
            "params": {
                "M": 16,
                "efConstruction": 200
            },
            "indexedCount": 3
        },
        {
            "fieldName": "bookName",
            "fieldType": "string",
            "indexType": "filter"
        },
        {
            "fieldName": "tags",
            "fieldType": "string",
            "indexType": "filter"
        }
    ],
    "embedding": {
        "status": "enabled",
        "field": "text",
        "model": "bge-base-zh",
        "vectorField": "vector"
    },
    "documentCount": 3,
    "alias": [
        "alias-book-emb"
    ],
    "indexStatus": {
        "status": "ready",
        "startTime": ""
    }
}