liuyu/pgvector
1
0
Fork 0
mirror of https://github.com/pgvector/pgvector.git synced 2026-07-16 01:26:56 +08:00
Code Issues Packages Projects Releases Wiki Activity

Updated readme [skip ci]

Browse Source
This commit is contained in:
Andrew Kane
2024-10-28 22:49:41 -07:00
parent 6170e2645b
commit e530a1a026
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
README.md
View File

@@ -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); 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 ```sql
SET hnsw.ef_search = 200; SET hnsw.ef_search = 200;