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test(python): cover search after schema merge
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@@ -2109,6 +2109,37 @@ def test_merge(tmp_db: DBConnection, tmp_path):
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table.merge(other_dataset, left_on="id")
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def test_search_after_merge(tmp_db: DBConnection):
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pytest.importorskip("lance")
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pd = pytest.importorskip("pandas")
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rng = np.random.default_rng(42)
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row_count = 512
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vectors = rng.standard_normal((row_count, 8)).astype(np.float32)
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table = tmp_db.create_table(
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"search_after_merge",
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data=pd.DataFrame(
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{
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"id": [str(i) for i in range(row_count)],
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"vector": list(vectors),
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}
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),
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)
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table.create_index("vector", config=IvfPq(num_partitions=1, num_sub_vectors=2))
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links = pd.DataFrame(
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{
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"id": [str(i) for i in range(row_count // 2)],
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"link": [f"https://example.com/{i}" for i in range(row_count // 2)],
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}
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)
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table.merge(links, left_on="id")
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result = table.search(vectors[-1]).refine_factor(50).limit(10).to_arrow()
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links_by_id = dict(zip(result["id"].to_pylist(), result["link"].to_pylist()))
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assert links_by_id[str(row_count - 1)] is None
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def test_delete(mem_db: DBConnection):
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table = mem_db.create_table(
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"my_table",
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