- fixes https://github.com/lancedb/lancedb/issues/1697.
- unifies vector column inference logic for remote and local table to
prevent future disparities.
- Updates docstring in RemoteTable to specify empty queries are not
supported
Right now when passing vector and query explicitly for hybrid search ,
vector_column_name is not deduced.
(https://lancedb.github.io/lancedb/hybrid_search/hybrid_search/#hybrid-search-in-lancedb
). Because vector and query can be both none when initialising the
QueryBuilder in this case. This PR forces deduction of query type if it
is set to "hybrid"
- Enforce all rerankers always return _relevance_score. This was already
loosely done in tests before but based on user feedback its better to
always have _relevance_score present in all reranked results
- Deprecate LinearCombinationReranker in docs. And also fix a case where
it would not return _relevance_score if one result set was missing
- Add overloads to Table.search, to preserve the return information
of different types of QueryBuilder objects for LanceTable
- Fix fts_column type annotation by including making it `Optional`
resolves#1550
---------
Co-authored-by: sayandip-dutta <sayandip.dutta@nevaehtech.com>
Co-authored-by: Will Jones <willjones127@gmail.com>
* Adding a simple test facility, which allows you to mock a single
endpoint at a time with a closure.
* Implementing all the database-level endpoints
Table-level APIs will be done in a follow up PR.
---------
Co-authored-by: Weston Pace <weston.pace@gmail.com>
The `ratelimiter` package hasn't been updated in ages and is no longer
maintained. This PR removes the dependency on `ratelimiter` and replaces
it with a custom rate limiter implementation.
---------
Co-authored-by: Will Jones <willjones127@gmail.com>
The new V2 manifest path scheme makes discovering the latest version of
a table constant time on object stores, regardless of the number of
versions in the table. See benchmarks in the PR here:
https://github.com/lancedb/lance/pull/2798Closes#1583
first off, apologies for any folly since i'm new to contributing to
lancedb. this PR is the continuation of [a discord
thread](https://discord.com/channels/1030247538198061086/1030247538667827251/1278844345713299599):
## user story
here's the lance db search query i'd like to run:
```
def search(phrase):
logger.info(f'Searching for phrase: {phrase}')
phrase_embedding = get_embedding(phrase)
df = (table.search((phrase_embedding, phrase), query_type='hybrid')
.limit(10).to_list())
logger.info(f'Success search with row count: {len(df)}')
search('howdy (howdy)')
search('howdy(howdy)')
```
the second search fails due to `ValueError: Syntax Error: howdy(howdy)`
i saw on the
[docs](https://lancedb.github.io/lancedb/fts/#phrase-queries-vs-terms-queries)
that i can use `phrase_query()` to [enable a
flag](https://github.com/lancedb/lancedb/blob/main/python/python/lancedb/query.py#L790-L792)
to wrap the query in double quotes (as well as sanitize single quotes)
prior to sending the query to search. this works for [normal
FTS](https://lancedb.github.io/lancedb/fts/), but the command is
unavailable on [hybrid
search](https://lancedb.github.io/lancedb/hybrid_search/hybrid_search/).
## changes
i added `phrase_query()` function to `LanceHybridQueryBuilder` by
propagating the call down to its `self. _fts_query` object. i'm not too
familiar with the codebase and am not sure if this is the best way to
implement the functionality. feel free to riff on this PR or discard
## tests
```
(lancedb) JamesMPB:python james$ pwd
/Users/james/src/lancedb/python
(lancedb) JamesMPB:python james$ pytest python/tests/test_table.py
python/tests/test_table.py ....................................... [100%]
====================================================== 39 passed, 1 warning in 2.23s =======================================================
```
Though the markdown can be rendered well on GitHub (GFM style?), but it
seems that it's required to insert a blank line between a paragraph and
a list block to make it render well with `mkdocs`?
see also the web page:
https://lancedb.github.io/lancedb/concepts/index_hnsw/
