Indexing Options
Search options are specified by PostgreSQL GUC.
Options for ivf
These options only work at ivf indexing algorithm. For ivf algorithm, refer to the [indexing document](../usage/indexing.html#list-of-operator-classes#Inverted file index (IVF)).
| Option | Type | Range | Default | Description |
|---|---|---|---|---|
| vectors.ivf_nprobe | integer | [1, 1_000_000] | 10 | Number of lists to scan. |
Options for hnsw
These options only work at hnsw indexing algorithm. For ivf algorithm, refer to the [indexing document](../usage/indexing.html#Hierarchical navigable small world graph (HNSW)).
| Option | Type | Range | Default | Description |
|---|---|---|---|---|
| vectors.hnsw_ef_search | integer | [1, 65535] | 100 | Search scope of HNSW. |
Other Options
Query options for search mode:
These options only work at hnsw indexing algorithm. For search mode, refer to the [search document](../usage/search.html#Search modes).
| Option | Type | Range | Default | Description |
|---|---|---|---|---|
| vectors.search_mode | enum | "basic", "vbase" | "vbase" | Search mode. |