Describe the problem

Decided to migrate from Pinecone to a self-hosted ChromaDB setup. Everything went flawlessly until I noticed that there is no option to filter by metadata field existence, such as where: { name: { $exists: true } }. Pinecone and a few other vector databases support this. Please consider adding this operator as soon as possible. Thank you.

Describe the proposed solution

To add $exists operator along with $eq, $ne, $in, $nin, $or, $and, etc...

Alternatives considered

No response

Importance

nice to have

Additional Information

No response