---
title: "Insert records into a table"
method: POST
path: "/v1/table/{id}/insert"
tags: ["Table", "Data"]
---

# Insert records into a table

`POST /v1/table/{id}/insert`

Insert new records into table `id`.

REST NAMESPACE ONLY
REST namespace uses Arrow IPC stream as the request body.
It passes in the `InsertIntoTableRequest` information in the following way:
- `id`: pass through path parameter of the same name
- `mode`: pass through query parameter of the same name

## Path parameters

- `id` string, required

## Query parameters

- `delimiter` string
- `mode` 'create' | 'append' | 'overwrite'

## Response `200`

Result of inserting records into a table

- InsertIntoTableResponse — Response from inserting records into a table
  - `transaction_id` string — Optional transaction identifier

## Other responses

- `400` — Indicates a bad request error. It could be caused by an unexpected request body format or other forms of request validation failure, such as invalid json. Usually serves application/json content, although in some cases simple text/plain content might be returned by the server's middleware.
- `401` — Unauthorized. The request lacks valid authentication credentials for the operation.
- `403` — Forbidden. Authenticated user does not have the necessary permissions.
- `404` — A server-side problem that means can not find the specified resource.
- `503` — The service is not ready to handle the request. The client should wait and retry. The service may additionally send a Retry-After header to indicate when to retry.
- `5XX` — A server-side problem that might not be addressable from the client side. Used for server 5xx errors without more specific documentation in individual routes.

## Changes

- **2025-12-11** `6ad4337e3849` — 1 warning, 2 info
  - removed the optional property `version` from the response with the `200` status
  - added the new enum value `create` to the `query` request parameter `mode`
  - added the optional property `transaction_id` to the response with the `200` status
- **2025-07-29** `40a3bc489d46` — 6 breaking, 12 warning, 12 info
  - the response property `type` became optional for the status `400`
  - the response property `type` became optional for the status `401`
  - the response property `type` became optional for the status `403`
  - the response property `type` became optional for the status `404`
  - …26 more
- **2025-07-22** `ac7519693c52` — 1 breaking, 3 info
  - removed the media type `application/x-arrow-ipc` from the request body
  - added the new optional `query` request parameter `delimiter` to all path's operations
  - added the new optional `query` request parameter `delimiter`
  - added the media type `application/vnd.apache.arrow.stream` to the request body
- **2025-07-21** `db7569410aa4` — 2 info
  - api operation id `InsertTable` removed and replaced with `InsertIntoTable`
  - api tag `Data` added
- …earlier changes not shown

[Full history](https://skmtc.dev/lance-format/apis/lance-namespace-specification/changes/v1/table/:id/insert/post.md)

---

[API](https://skmtc.dev/lance-format/apis/lance-namespace-specification.md) · [All operations](https://skmtc.dev/lance-format/apis/lance-namespace-specification/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/lance-format/lance-namespace-specification/revisions/6ad4337e3849/schema)