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Table
Data

Query a table

Query a table with vector search and optional filtering. Returns results in Arrow IPC stream format.

post/v1/table/{id}/query

Path parameters

idstring required

string identifier of an object in a namespace, following the Lance Namespace spec. When the value is equal to the delimiter, it represents the root namespace. For example, v1/namespace/./list performs a ListNamespace on the root namespace.

Request body

namestring required
namespacestring[] required
bypass_vector_indexboolean nullable

Whether to bypass vector index

columnsstring[] nullable

Optional list of columns to return

distance_typestring nullable

Distance metric to use

efinteger nullable

Search effort parameter for HNSW index

fast_searchboolean nullable

Whether to use fast search

filterstring nullable

Optional SQL filter expression

kinteger required

Number of results to return

lower_boundnumber float nullable

Lower bound for search

nprobesinteger nullable

Number of probes for IVF index

offsetinteger nullable

Number of results to skip

prefilterboolean nullable

Whether to apply filtering before vector search

refine_factorinteger nullable

Refine factor for search

upper_boundnumber float nullable

Upper bound for search

vector_columnstring nullable

Name of the vector column to search

versioninteger nullable

Table version to query

with_row_idboolean nullable

If true, return the row id as a column called _rowid

Example request

{
  "ef": 0,
  "offset": 0,
  "columns": [
    "columns",
    "columns"
  ],
  "vector_column": "vector_column",
  "fast_search": true,
  "k": 0,
  "upper_bound": 1.2315135,
  "version": 0,
  "with_row_id": true,
  "prefilter": true,
  "filter": "filter",
  "refine_factor": 0,
  "full_text_query": {
    "string_query": {
      "columns": [
        "columns",
        "columns"
      ],
      "query": "query"
    },
    "structured_query": {
      "query": {
        "boolean": {
          "must_not": [
            null,
            null
          ],
          "should": [
            null,
            null
          ],
          "must": [
            null,
            null
          ]
        },
        "phrase": {
          "terms": "terms",
          "column": "column",
          "slop": 0
        },
        "match": {
          "fuzziness": 0,
          "terms": "terms",
          "column": "column",
          "boost": 6.0274563,
          "prefix_length": 0,
          "operator": "And",
          "max_expansions": 0
        },
        "boost": {
          "negative": null,
          "negative_boost": 7.0614014,
          "positive": null
        },
        "multi_match": {
          "match_queries": [
            {
              "fuzziness": 0,
              "terms": "terms",
              "column": "column",
              "boost": 6.0274563,
              "prefix_length": 0,
              "operator": "And",
              "max_expansions": 0
            },
            {
              "fuzziness": 0,
              "terms": "terms",
              "column": "column",
              "boost": 6.0274563,
              "prefix_length": 0,
              "operator": "And",
              "max_expansions": 0
            }
          ]
        }
      }
    }
  },
  "distance_type": "distance_type",
  "lower_bound": 3.6160767,
  "bypass_vector_index": true,
  "nprobes": 0,
  "name": "name",
  "namespace": [
    "namespace",
    "namespace"
  ],
  "vector": {
    "single_vector": [
      1.0246457,
      1.0246457
    ],
    "multi_vector": [
      [
        1.4894159,
        1.4894159
      ],
      [
        1.4894159,
        1.4894159
      ]
    ]
  }
}

Response

Query results in Arrow IPC stream format

Changes