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Updated readme [skip ci]

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Andrew Kane
2024-10-28 22:49:41 -07:00
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README.md
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@@ -451,7 +451,7 @@ Exact indexes work well for conditions that match a lower percentage of rows. Ot
CREATE INDEX ON items USING hnsw (embedding vector_l2_ops);
```
With approximate indexes, filtering is applied after the index is scanned (known as post-filtering). If a condition matches 10% of rows, with HNSW and the default `hnsw.ef_search` of 40, only 4 rows will match on average. For more rows, increase `hnsw.ef_search`.
With approximate indexes, filtering is applied *after* the index is scanned. If a condition matches 10% of rows, with HNSW and the default `hnsw.ef_search` of 40, only 4 rows will match on average. For more rows, increase `hnsw.ef_search`.
```sql
SET hnsw.ef_search = 200;