when i insert vector to milvus,i get zero results, but the code is copied and pasted over.

[xiangcaoximilu]

When i configured the environment, i copy the code and still get zero results? i don't know...how to say..

i am performing the operation to insert the vector into milvus collection..get zero?

[junjiejiangjjj]

The interface for obtaining the number of milvus data in the code example is inaccurate. As long as there is no error during operation, it is inserted.

[watertianyi]

@junjiejiangjjj
The above situation also occurs to me. How should I adjust it? Can you be more specific? What parameters should I change?

[junjiejiangjjj]

@junjiejiangjjj The above situation also occurs to me. How should I adjust it? Can you be more specific? What parameters should I change?

The data has been inserted successfully. You can use the following code to view the actual number.

from pymilvus import MilvusClient

client = MilvusClient(
    uri="http://localhost:19530"
)

res = client.query(
    collection_name="you collection name",
    output_fields=["count(*)"]
)

print(res)

Or you can also view information through this project： https://github.com/zilliztech/attu

[watertianyi]

@junjiejiangjjj
Yes, I saw your answer in another question. Only by using collection.flush() can you see the number of insertions in collection.num_entities.

[watertianyi]

@junjiejiangjjj我也遇到上述情况了，该怎么调整？能具体说一下吗？要改哪些参数？

数据已插入成功，您可以使用以下代码查看实际数量。

from pymilvus import MilvusClient

client = MilvusClient(
    uri="http://localhost:19530"
)

res = client.query(
    collection_name="you collection name",
    output_fields=["count(*)"]
)

print(res)

或者您也可以通过这个项目查看信息：https://github.com/zilliztech/attu

RPC error: [query], <MilvusException: (code=1, message=query expression is empty)>, <Time:{'RPC start': '2024-09-12 15:23:42.587309', 'RPC error': '2024-09-12 15:23:42.587895'}>
Failed to query collection: reverse_image_search1

[junjiejiangjjj]

RPC error: [query], <MilvusException: (code=1, message=query expression is empty)>, <Time:{'RPC start': '2024-09-12 15:23:42.587309', 'RPC error': '2024-09-12 15:23:42.587895'}>
Failed to query collection: reverse_image_search1

Update pymilvus. I can run it with version 2.4.4 of pymilvus.

[watertianyi]

@junjiejiangjjj
Still the same
2024-09-12 17:19:09,889 - 140641356620160 - milvus_client.py-milvus_client:519 - DEBUG: Created new connection using: f650d41aab1342b68293b8dae4224bfc
2024-09-12 17:19:09,892 - 140641356620160 - decorators.py-decorators:108 - ERROR: RPC error: [query], <MilvusException: (code=1, message=query expression is empty)>, <Time:{'RPC start': '2024-09-12 17:19:09.891481', 'RPC error': '2024-09-12 17:19:09.892405'}>
2024-09-12 17:19:09,892 - 140641356620160 - milvus_client.py-milvus_client:301 - ERROR: Failed to query collection: reverse_image_search1
Unexpected exception formatting exception. Falling back to standard exception
Traceback (most recent call last):
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/IPython/core/interactiveshell.py", line 3505, in run_code
# on runtime, and also because if any node in the node list is
File "/tmp/ipykernel_2590518/3210487239.py", line 7, in
res = client.query(
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/pymilvus/milvus_client/milvus_client.py", line 302, in query
output_fields (List[str], optional): List of which field values to return. If None
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/pymilvus/milvus_client/milvus_client.py", line 295, in query
In order for the search to process, a collection needs to have been either provided
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/pymilvus/decorators.py", line 109, in handler
) from e
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/pymilvus/decorators.py", line 105, in handler
if timeout(start_time):
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/pymilvus/decorators.py", line 136, in handler
def handler(*args, **kwargs):
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/pymilvus/decorators.py", line 85, in handler
while True:
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/pymilvus/decorators.py", line 50, in handler
def wrapper(func: Any):
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/pymilvus/client/grpc_handler.py", line 988, in query
pymilvus.exceptions.MilvusException: <MilvusException: (code=1, message=query expression is empty)>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/IPython/core/interactiveshell.py", line 2102, in showtraceback
simply call this method."""
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/IPython/core/ultratb.py", line 1310, in structured_traceback
long_header=long_header, include_vars=include_vars,
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/IPython/core/ultratb.py", line 1199, in structured_traceback
etype, evalue, etb = exception
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/IPython/core/ultratb.py", line 1052, in structured_traceback
# some locals
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/IPython/core/ultratb.py", line 978, in format_exception_as_a_whole
exc = '%s%s%s' % (colors.excName, etype, colorsnormal)
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/IPython/core/ultratb.py", line 878, in format_record
lineno=frame_info.lineno,
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/IPython/core/ultratb.py", line 712, in lines
def show_exception_only(self, etype, evalue):
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/stack_data/utils.py", line 144, in cached_property_wrapper
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/stack_data/core.py", line 734, in lines
pieces = self.included_pieces
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/stack_data/utils.py", line 144, in cached_property_wrapper
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/stack_data/core.py", line 681, in included_pieces
pos = scope_pieces.index(self.executing_piece)
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/stack_data/utils.py", line 144, in cached_property_wrapper
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/stack_data/core.py", line 660, in executing_piece
return only(
File "/home/hjq/anaconda3/envs/image_search/lib/python3.9/site-packages/executing/executing.py", line 116, in only
raise NotOneValueFound('Expected one value, found 0')
executing.executing.NotOneValueFound: Expected one value, found 0

[junjiejiangjjj]

Maybe you are using an older version of milvus. Try this: https://milvus.io/api-reference/pymilvus/v2.4.x/ORM/Collection/flush.md

[watertianyi]

@junjiejiangjjj
What I installed is pymilvus 2.4.4

[junjiejiangjjj]

@junjiejiangjjj What I installed is pymilvus 2.4.4

I mean the milvus version, not pymilvus

[watertianyi]

@junjiejiangjjj
The inserted data can be displayed in a list and can be added, deleted, checked and modified.