milvus sdk常用命令

milvus sdk常用命令

python

https://milvus.io/docs/manage_databases.md

pip3 install pymilvus

#!/usr/bin/env
from pymilvus import connections, db
from pymilvus import CollectionSchema, FieldSchema, DataType
from pymilvus import Collection
from pymilvus import utility

#conn = connections.connect(host="192.168.10.26", port=19530)
conn = connections.connect(host="211.154.163.93", port=19530)
#db.using_database("liwenchao")
#utility.drop_collection("collection")
#db.drop_database("liwenchao")
print(db.list_database())

#创建和删除数据和mysql类似有先后顺序
#创建顺序为 database>collection>partition
#删除顺序反过来 partition>collection>database

#create  database
database = db.create_database("liwenchao")
print(db.list_database())

#using databse
db.using_database("liwenchao")

#create collection prepare，创建机器前初始化结构体
book_id = FieldSchema(
  name="book",
  dtype=DataType.INT64,
  is_primary=True,
)
book_name = FieldSchema(
  name="book_name",
  dtype=DataType.VARCHAR,
  max_length=200,
)
word_count = FieldSchema(
  name="word_count",
  dtype=DataType.INT64,
)
book_intro = FieldSchema(
  name="book_intro",
  dtype=DataType.FLOAT_VECTOR,
  dim=2
)
schema = CollectionSchema(
  fields=[book_id, book_name,word_count, book_intro],
  description="Test book search",
  enable_dynamic_field=True
)
collection_name = "collection"

#create collection 
collection = Collection(
    name=collection_name,
    using='default',
    schema=schema,
    shards_num=2
)

#print all collection
print(utility.list_collections())

#check collection is here
print(utility.has_collection("collection"))

#create partition
collection = Collection("collection")      # Get an existing collection.
collection.create_partition("novel")

#check partition is here
collection = Collection("collection")      # Get an existing collection.
print (collection.has_partition("novel"))

#delete partition
collection.drop_partition("novel")

#delete collection
utility.drop_collection("collection")

#drop database
db.drop_database("liwenchao")
print(db.list_database())