rust/lancedb
1
0
Fork 0
mirror of https://github.com/lancedb/lancedb.git synced 2026-01-13 23:32:57 +00:00
Code Issues Packages Projects Releases Wiki Activity

feat(python): expose prefilter to lancedb (#522)

Browse Source 
We have experimental support for prefiltering (without ANN) in pylance.
This means that we can now apply a filter BEFORE vector search is
performed. This can be done via the `.where(filter_string,
prefilter=True)` kwargs of the query.

Limitations:
- When connecting to LanceDB cloud, `prefilter=True` will raise
NotImplemented
- When an ANN index is present, `prefilter=True` will raise
NotImplemented
- This option is not available for full text search query
- This option is not available for empty search query (just
filter/project)

Additional changes in this PR:
- Bump pylance version to v0.8.0 which supports the experimental
prefiltering.

---------

Co-authored-by: Chang She <chang@lancedb.com>
This commit is contained in:
Chang She
2023-10-01 10:34:12 -07:00
committed by GitHub
parent 343e274ea5
commit 693bca1eba
6 changed files with 68 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
python/pyproject.toml
View File

@@ -2,7 +2,7 @@
name = "lancedb"
version = "0.2.5"
dependencies = [
"pylance==0.7.4",
"pylance==0.8.0",
"ratelimiter~=1.0",
"retry>=0.9.2",
"tqdm>=4.1.0",