Retrieve All Entries in Milvus Vector Database Just for Viewing?

TL;DR

Use the collection query() method with an expression that matches everything. Note this loads all ids into memory, so for very large collections page through with offset and limit instead of one giant query.

Steps

1. Use the collection query() method with an expression that matches everything. For a collection named 'aaa' with an int64 'id' field: collection = Collection('aaa'); result = collection.query(expr='id >= 0'). That returns every entity, and you can pull just the ids out of the result list. Note this loads all ids into memory, so for very large collections page through with offset and limit instead of one giant query.

When to use

You are seeing this: For a collection named 'aaa' with an int64 'id' field: collection = Collection('aaa'); result = collection.query(expr='id >= 0'). Use this skill when you run into "Retrieve All Entries in Milvus Vector Database Just for Viewing?".

When not to use

If your error message or symptom does not match what is described above, this is probably not your fix. Search for your exact error text instead of forcing this one to fit.

Versions

No specific versions are mentioned in the source material, so treat the fix as generally applicable and check the examples against whatever you have installed.

Why this happens

The original report does not dig into a root cause. It documents the symptom and the fix that resolved it.

Edge cases

• Note this loads all ids into memory, so for very large collections page through with offset and limit instead of one giant query.

Source: Stack Overflow #79179997 (accepted answer, 4 votes): I’m new to database management, and in my project, I need to use a vector database to store vector data. I chose Milvus for this purpose. I plan to implement a delete function so users can remove entries, but users might forget the names or IDs they want to delete. To address this, I’m also developing a "list all" function that allows users to view all entries in the database. Here’s the structure of my database (as a dictionary): DB = { "id": id, "vector": vector, "file_name": name, } Currently, I’m loading all names like this: ``` client = MilvusClient(r'/my.db') output =...

Verified resolution: Use the collection query() method with an expression that matches everything. For a collection named 'aaa' with an int64 'id' field: collection = Collection('aaa'); result = collection.query(expr='id >= 0'). That returns every entity, and you can pull just the ids out of the result list. Note this loads all ids into memory, so for very large collections page through with offset and limit instead of one giant query.

Source URL: https://stackoverflow.com/questions/79179997/retrieve-all-entries-in-milvus-vector-database-just-for-viewing