mirror of
https://github.com/lancedb/lancedb.git
synced 2026-11-13 22:26:53 +00:00
Jack YeandClaude Sonnet 5
de95ed3f6d
A broad documentation pass across the areas LanceDB Enterprise and Embedded diverge on most: **Data Curation** -- GPU Function execution, Slurm scheduling (and what Slurm is, for readers new to it), blob late materialization as its own page, joins, aggregation/profiling, sampling, near-duplicate detection, chunking, distributed shuffle, and IVF-partition clustering. **Feature Engineering** -- computed columns and materialized views, restructured to lead with the Function-based path and show the SQL form side by side with Python throughout; a single Auto Refresh page instead of duplicating scheduling details on every refresh page; adaptive execution; checkpointing; GPU and Slurm placement for refresh workers; a Training Cache page for the PyTorch data loader's automatic cache benefit. **Security & Governance** -- an Audit Log reference (schema, access, grants), Secrets promoted to an ordinary catalog object with their own SQL DDL and a vending/rotation guide, and privilege-table fixes verified against the authorization source. **Deployment & Maintenance** -- Horizontal Scaling and OpenTelemetry moved into a real Deployment area; Automated Cleanup folded into Intelligent Auto-Maintenance (every other maintenance decision already lived there); RTE Compaction and Advanced Conflict Resolution documented in depth. **Landing page** -- the Enterprise feature comparison table reorganized (several redundant or stale rows removed, several new areas added), and the "why Enterprise" bullets replaced with ones tied to a concrete page (Performance, Scale, Fault tolerance, Multicloud deployment, Simplify operations) instead of vague promises. Plus a full pass addressing lancedb-gatekeeper's review: a real test-safety bug (a quickstart test could silently overwrite and delete a deployment's own `frames` table), a fabricated SQL statement with no backing implementation, an actual dedup-guarantee bug in `take_row_ids`, and dozens of documentation-accuracy fixes verified against source rather than taken on faith -- each either fixed, or left with an explicit note on why it needs a feature or deployment owner's sign-off instead of being guessed at. 🤖 Generated with [Claude Code](https://claude.com/claude-code) https://claude.ai/code/session_018PXMCbRH6i5w47TsjeEUMT --------- Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
735 lines
21 KiB
Python
735 lines
21 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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# SPDX-FileCopyrightText: Copyright The LanceDB Authors
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def test_create_table_from_dicts():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_table_from_dicts]
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data = [
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{"vector": [1.1, 1.2], "lat": 45.5, "long": -122.7},
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{"vector": [0.2, 1.8], "lat": 40.1, "long": -74.1},
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]
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db.create_table("test_table", data, mode="overwrite")
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tbl = db["test_table"]
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tbl.head()
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print("Rows:", tbl.count_rows())
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# --8<-- [end:create_table_from_dicts]
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assert tbl.count_rows() == 2
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def test_create_table_conflict_handling():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_table_conflict_handling]
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data = [{"vector": [1.1, 1.2], "lat": 45.5, "long": -122.7}]
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db.create_table("conflict_table", data)
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# Idempotent open: reuse the existing table if it exists.
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# The provided data is ignored; the schema is validated against the
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# existing table and a mismatch raises an error.
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tbl = db.create_table("conflict_table", data, exist_ok=True)
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# Overwrite: replace the contents with the provided data.
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tbl = db.create_table("conflict_table", data, mode="overwrite")
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print("Rows:", tbl.count_rows())
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# --8<-- [end:create_table_conflict_handling]
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def test_create_table_custom_schema():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_table_custom_schema]
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import pyarrow as pa
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custom_schema = pa.schema(
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[
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pa.field("vector", pa.list_(pa.float32(), 4)),
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pa.field("lat", pa.float32()),
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pa.field("long", pa.float32()),
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]
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)
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data = [
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{"vector": [1.1, 1.2, 1.3, 1.4], "lat": 45.5, "long": -122.7},
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{"vector": [0.2, 1.8, 0.4, 3.6], "lat": 40.1, "long": -74.1},
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]
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tbl = db.create_table(
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"my_table_custom_schema", data, schema=custom_schema, mode="overwrite"
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)
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print("Rows:", tbl.count_rows())
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# --8<-- [end:create_table_custom_schema]
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assert tbl.count_rows() == 2
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def test_create_table_from_pandas():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_table_from_pandas]
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import pandas as pd
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data = pd.DataFrame(
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{
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"vector": [[1.1, 1.2, 1.3, 1.4], [0.2, 1.8, 0.4, 3.6]],
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"lat": [45.5, 40.1],
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"long": [-122.7, -74.1],
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}
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)
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db.create_table("my_table_pandas", data, mode="overwrite")
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db["my_table_pandas"].head()
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# --8<-- [end:create_table_from_pandas]
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def test_create_table_from_polars():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_table_from_polars]
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import polars as pl
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data = pl.DataFrame(
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{
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"vector": [[3.1, 4.1], [5.9, 26.5]],
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"item": ["foo", "bar"],
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"price": [10.0, 20.0],
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}
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)
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tbl = db.create_table("my_table_pl", data, mode="overwrite")
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print("Rows:", tbl.count_rows())
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# --8<-- [end:create_table_from_polars]
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assert tbl.count_rows() == 2
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def test_create_table_from_arrow():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_table_from_arrow]
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import numpy as np
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import pyarrow as pa
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dim = 16
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total = 2
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schema = pa.schema(
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[
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pa.field("vector", pa.list_(pa.float16(), dim)),
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pa.field("text", pa.string()),
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]
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)
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data = pa.Table.from_arrays(
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[
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pa.array(
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[np.random.randn(dim).astype(np.float16) for _ in range(total)],
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pa.list_(pa.float16(), dim),
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),
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pa.array(["foo", "bar"]),
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],
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["vector", "text"],
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)
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tbl = db.create_table("f16_tbl", data, schema=schema, mode="overwrite")
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print("Rows:", tbl.count_rows())
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# --8<-- [end:create_table_from_arrow]
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assert tbl.count_rows() == 2
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def test_create_table_from_pydantic():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_table_from_pydantic]
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from lancedb.pydantic import LanceModel, Vector
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class Content(LanceModel):
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movie_id: int
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vector: Vector(128)
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genres: str
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title: str
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imdb_id: int
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@property
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def imdb_url(self) -> str:
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return f"https://www.imdb.com/title/tt{self.imdb_id}"
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tbl = db.create_table("movielens_small", schema=Content, mode="overwrite")
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print("Rows:", tbl.count_rows())
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# --8<-- [end:create_table_from_pydantic]
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assert tbl.count_rows() == 0
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def test_create_table_nested_schema():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_table_nested_schema]
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from lancedb.pydantic import LanceModel, Vector
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from pydantic import BaseModel
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class Document(BaseModel):
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content: str
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source: str
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class NestedSchema(LanceModel):
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id: str
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vector: Vector(1536)
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document: Document
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tbl = db.create_table("nested_table", schema=NestedSchema, mode="overwrite")
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print("Rows:", tbl.count_rows())
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# --8<-- [end:create_table_nested_schema]
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assert tbl.count_rows() == 0
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def test_create_empty_table():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_empty_table]
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import pyarrow as pa
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schema = pa.schema(
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[
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pa.field("vector", pa.list_(pa.float32(), 2)),
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pa.field("item", pa.string()),
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pa.field("price", pa.float32()),
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]
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)
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tbl = db.create_table("test_empty_table", schema=schema, mode="overwrite")
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print("Rows:", tbl.count_rows())
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# --8<-- [end:create_empty_table]
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assert tbl.count_rows() == 0
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def test_create_empty_table_pydantic():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_empty_table_pydantic]
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from lancedb.pydantic import LanceModel, Vector
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class Item(LanceModel):
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vector: Vector(2)
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item: str
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price: float
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tbl = db.create_table(
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"test_empty_table_new", schema=Item.to_arrow_schema(), mode="overwrite"
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)
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print("Rows:", tbl.count_rows())
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# --8<-- [end:create_empty_table_pydantic]
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assert tbl.count_rows() == 0
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def test_open_existing_table():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:open_existing_table]
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# Create a table first
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data = [{"vector": [1.1, 1.2], "lat": 45.5, "long": -122.7}]
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db.create_table("test_table", data, mode="overwrite")
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# List table names
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print(db.list_tables().tables)
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# Open existing table
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tbl = db.open_table("test_table")
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print("Rows:", tbl.count_rows())
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# --8<-- [end:open_existing_table]
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assert tbl.count_rows() == 1
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def test_drop_table():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:drop_table]
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# Create a table first
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data = [{"vector": [1.1, 1.2], "lat": 45.5}]
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db.create_table("my_table", data, mode="overwrite")
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# Drop the table
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db.drop_table("my_table")
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# --8<-- [end:drop_table]
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def test_add_from_dataset(tmp_db, tmp_path, monkeypatch):
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db = tmp_db
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monkeypatch.chdir(tmp_path)
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# --8<-- [start:add_from_dataset]
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import pyarrow as pa
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import pyarrow.parquet as pq
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data_path = "input.parquet"
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pq.write_table(pa.table({"id": [1, 2], "name": ["Alice", "Bob"]}), data_path)
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import pyarrow.dataset as ds
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dataset = ds.dataset(data_path, format="parquet")
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table = db.create_table("my_table", schema=dataset.schema, mode="overwrite")
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table.add(dataset)
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print("Rows:", table.count_rows())
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# --8<-- [end:add_from_dataset]
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assert table.count_rows() == 2
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def test_create_table_from_iterator():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:create_table_from_iterator]
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import pyarrow as pa
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schema = pa.schema(
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[
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pa.field("vector", pa.list_(pa.float32(), 4)),
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pa.field("item", pa.utf8()),
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pa.field("price", pa.float32()),
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]
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)
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def make_batches():
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for i in range(5):
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yield pa.RecordBatch.from_arrays(
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[
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pa.array(
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[[3.1, 4.1, 5.1, 6.1], [5.9, 26.5, 4.7, 32.8]],
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pa.list_(pa.float32(), 4),
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),
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pa.array(["foo", "bar"]),
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pa.array([10.0, 20.0]),
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],
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["vector", "item", "price"],
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)
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table = db.create_table("batched_table", schema=schema)
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table.add(make_batches())
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print("Rows:", table.count_rows())
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# --8<-- [end:create_table_from_iterator]
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assert table.count_rows() == 10
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def test_update_operation():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:update_operation]
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import pyarrow as pa
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table = db.create_table(
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"users_example",
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data=pa.table(
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{
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"id": [1, 2],
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"name": ["Alice", "Bob"],
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"login_count": [10, 20],
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}
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),
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mode="overwrite",
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)
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table.update(where="id = 2", values={"name": "Bobby"})
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print("Rows:", table.count_rows())
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# --8<-- [end:update_operation]
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assert table.count_rows() == 2
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assert table.search().where("id = 2").to_list()[0]["name"] == "Bobby"
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def test_update_using_sql():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:update_using_sql]
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import pyarrow as pa
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table = db.create_table(
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"users_example",
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data=pa.table(
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{
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"id": [1, 2],
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"name": ["Alice", "Bob"],
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"login_count": [10, 20],
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}
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),
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mode="overwrite",
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)
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table.update(where="id = 2", values_sql={"login_count": "login_count + 1"})
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print("Rows:", table.count_rows())
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# --8<-- [end:update_using_sql]
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assert table.count_rows() == 2
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assert table.search().where("id = 2").to_list()[0]["login_count"] == 21
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def test_merge_matched_update_only():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:merge_matched_update_only]
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import pyarrow as pa
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table = db.create_table(
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"users_example",
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data=pa.table(
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{
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"id": [1, 2],
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"name": ["Alice", "Bob"],
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"login_count": [10, 20],
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}
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),
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mode="overwrite",
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)
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incoming_users = pa.table(
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{
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"id": [2, 3],
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"name": ["Bobby", "Charlie"],
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"login_count": [21, 5],
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}
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)
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(table.merge_insert("id").when_matched_update_all().execute(incoming_users))
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print("Rows:", table.count_rows())
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# --8<-- [end:merge_matched_update_only]
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assert table.count_rows() == 2
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def test_insert_if_not_exists():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:insert_if_not_exists]
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import pyarrow as pa
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table = db.create_table(
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"users_example",
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data=pa.table(
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{
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"id": [1, 2],
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"name": ["Alice", "Bob"],
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"login_count": [10, 20],
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}
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),
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mode="overwrite",
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)
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incoming_users = pa.table(
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{
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"id": [2, 3],
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"name": ["Bobby", "Charlie"],
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"login_count": [21, 5],
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}
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)
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(table.merge_insert("id").when_not_matched_insert_all().execute(incoming_users))
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print("Rows:", table.count_rows())
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# --8<-- [end:insert_if_not_exists]
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assert table.count_rows() == 3
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def test_merge_update_insert():
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from tempfile import TemporaryDirectory
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import lancedb
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with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
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db = lancedb.connect(uri)
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# --8<-- [start:merge_update_insert]
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import pyarrow as pa
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table = db.create_table(
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"users_example",
|
|
data=pa.table(
|
|
{
|
|
"id": [1, 2],
|
|
"name": ["Alice", "Bob"],
|
|
"login_count": [10, 20],
|
|
}
|
|
),
|
|
mode="overwrite",
|
|
)
|
|
|
|
incoming_users = pa.table(
|
|
{
|
|
"id": [2, 3],
|
|
"name": ["Bobby", "Charlie"],
|
|
"login_count": [21, 5],
|
|
}
|
|
)
|
|
|
|
(
|
|
table.merge_insert("id")
|
|
.when_matched_update_all()
|
|
.when_not_matched_insert_all()
|
|
.execute(incoming_users)
|
|
)
|
|
|
|
print("Rows:", table.count_rows())
|
|
# --8<-- [end:merge_update_insert]
|
|
assert table.count_rows() == 3
|
|
assert table.search().where("id = 2").to_list()[0]["login_count"] == 21
|
|
|
|
|
|
def test_merge_delete_missing_by_source():
|
|
from tempfile import TemporaryDirectory
|
|
|
|
import lancedb
|
|
|
|
with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
|
|
db = lancedb.connect(uri)
|
|
# --8<-- [start:merge_delete_missing_by_source]
|
|
import pyarrow as pa
|
|
|
|
table = db.create_table(
|
|
"users_example",
|
|
data=pa.table(
|
|
{
|
|
"id": [1, 2, 3],
|
|
"name": ["Alice", "Bob", "Charlie"],
|
|
"login_count": [10, 20, 5],
|
|
}
|
|
),
|
|
mode="overwrite",
|
|
)
|
|
|
|
incoming_users = pa.table(
|
|
{
|
|
"id": [2, 3],
|
|
"name": ["Bobby", "Charlie"],
|
|
"login_count": [21, 5],
|
|
}
|
|
)
|
|
|
|
(
|
|
table.merge_insert("id")
|
|
.when_matched_update_all()
|
|
.when_not_matched_insert_all()
|
|
.when_not_matched_by_source_delete()
|
|
.execute(incoming_users)
|
|
)
|
|
|
|
print("Rows:", table.count_rows())
|
|
# --8<-- [end:merge_delete_missing_by_source]
|
|
assert table.count_rows() == 2
|
|
assert table.count_rows("id = 1") == 0
|
|
|
|
|
|
def test_merge_partial_columns():
|
|
from tempfile import TemporaryDirectory
|
|
|
|
import lancedb
|
|
|
|
with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
|
|
db = lancedb.connect(uri)
|
|
# --8<-- [start:merge_partial_columns]
|
|
import pyarrow as pa
|
|
|
|
table = db.create_table(
|
|
"users_example",
|
|
data=pa.table(
|
|
{
|
|
"id": [1, 2],
|
|
"name": ["Alice", "Bob"],
|
|
"login_count": [10, 20],
|
|
}
|
|
),
|
|
mode="overwrite",
|
|
)
|
|
|
|
incoming_users = pa.table(
|
|
{
|
|
"id": [2, 3],
|
|
"name": ["Bobby", "Charlie"],
|
|
}
|
|
)
|
|
|
|
(
|
|
table.merge_insert("id")
|
|
.when_matched_update_all()
|
|
.when_not_matched_insert_all()
|
|
.execute(incoming_users)
|
|
)
|
|
|
|
print("Rows:", table.count_rows())
|
|
# --8<-- [end:merge_partial_columns]
|
|
assert table.count_rows() == 3
|
|
assert table.search().where("id = 3").to_list()[0]["login_count"] is None
|
|
|
|
|
|
def test_write_workflow():
|
|
# --8<-- [start:write_workflow]
|
|
from tempfile import TemporaryDirectory
|
|
|
|
import lancedb
|
|
|
|
with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
|
|
db = lancedb.connect(uri)
|
|
table = db.create_table(
|
|
"users",
|
|
[
|
|
{"id": 1, "name": "Alice", "login_count": 10},
|
|
{"id": 2, "name": "Bob", "login_count": 20},
|
|
],
|
|
)
|
|
table.add([{"id": 3, "name": "Charlie", "login_count": 5}])
|
|
table.update(where="id = 2", values={"name": "Bobby"})
|
|
table.update(where="id = 2", values_sql={"login_count": "login_count + 1"})
|
|
(
|
|
table.merge_insert("id")
|
|
.when_matched_update_all()
|
|
.when_not_matched_insert_all()
|
|
.execute(
|
|
[
|
|
{"id": 3, "name": "Charlie", "login_count": 6},
|
|
{"id": 4, "name": "Dana", "login_count": 1},
|
|
]
|
|
)
|
|
)
|
|
print("Rows selected for deletion:", table.search().where("id = 4").to_list())
|
|
table.delete("id = 4")
|
|
rows = sorted(table.search().to_list(), key=lambda row: row["id"])
|
|
print(rows)
|
|
# --8<-- [end:write_workflow]
|
|
|
|
assert rows == [
|
|
{"id": 1, "name": "Alice", "login_count": 10},
|
|
{"id": 2, "name": "Bobby", "login_count": 21},
|
|
{"id": 3, "name": "Charlie", "login_count": 6},
|
|
]
|
|
|
|
|
|
def test_append_rows():
|
|
from tempfile import TemporaryDirectory
|
|
|
|
import lancedb
|
|
|
|
with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
|
|
db = lancedb.connect(uri)
|
|
# --8<-- [start:append_rows]
|
|
table = db.create_table("users", [{"id": 1, "name": "Alice"}])
|
|
table.add([{"id": 2, "name": "Bob"}, {"id": 3, "name": "Charlie"}])
|
|
rows = sorted(table.search().to_list(), key=lambda row: row["id"])
|
|
print(rows)
|
|
# --8<-- [end:append_rows]
|
|
|
|
assert [row["id"] for row in rows] == [1, 2, 3]
|
|
|
|
|
|
def test_delete_rows():
|
|
from tempfile import TemporaryDirectory
|
|
|
|
import lancedb
|
|
|
|
with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
|
|
db = lancedb.connect(uri)
|
|
# --8<-- [start:delete_rows]
|
|
table = db.create_table(
|
|
"users",
|
|
[
|
|
{"id": 1, "name": "Alice"},
|
|
{"id": 2, "name": "Bob"},
|
|
{"id": 3, "name": "Charlie"},
|
|
],
|
|
)
|
|
predicate = "id = 3"
|
|
print("Selected:", table.search().where(predicate).to_list())
|
|
table.delete(predicate)
|
|
rows = sorted(table.search().to_list(), key=lambda row: row["id"])
|
|
print("Remaining:", rows)
|
|
# --8<-- [end:delete_rows]
|
|
|
|
assert rows == [{"id": 1, "name": "Alice"}, {"id": 2, "name": "Bob"}]
|
|
|
|
|
|
def test_add_progress():
|
|
from tempfile import TemporaryDirectory
|
|
|
|
import lancedb
|
|
|
|
def report_progress(progress):
|
|
print(f"Rows written: {progress['output_rows']}")
|
|
|
|
with TemporaryDirectory(prefix="lancedb-ingestion-") as uri:
|
|
db = lancedb.connect(uri)
|
|
# --8<-- [start:add_progress]
|
|
table = db.create_table("users", [{"id": 1, "name": "Alice"}])
|
|
table.add(
|
|
[{"id": 2, "name": "Bob"}, {"id": 3, "name": "Charlie"}],
|
|
progress=report_progress,
|
|
)
|
|
rows = sorted(table.search().to_list(), key=lambda row: row["id"])
|
|
print("After insertion:", rows)
|
|
# --8<-- [end:add_progress]
|
|
|
|
assert rows == [
|
|
{"id": 1, "name": "Alice"},
|
|
{"id": 2, "name": "Bob"},
|
|
{"id": 3, "name": "Charlie"},
|
|
]
|