---
title: "Update rows in a table"
method: POST
path: "/v1/table/{id}/update"
tags: ["Table"]
---

# Update rows in a table

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

Update existing rows in a table using SQL expressions. Each update consists of a column name and an SQL expression that will be evaluated against the current row's value. Optionally, a predicate can be provided to filter which rows to update.

## Path parameters

- `id` string, required

## Request body

- UpdateTableRequest
  - `name` string, required — The table name
  - `namespace` string[], required — The namespace identifier
  - `predicate` string, nullable — Optional SQL predicate to filter rows for update
  - `updates` array[], required — List of column updates as [column_name, expression] pairs
    - string[]

## Response `200`

Update successful

- UpdateTableResponse
  - `updated_rows` integer, required — Number of rows updated
  - `version` integer, required — The commit version associated with the operation

## 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

- **2025-07-21** `6790486d1fac` — 8 breaking, 21 warning, 19 info
  - added the new required request property `name`
  - added the new required request property `namespace`
  - removed the required property `code` from the response with the `400` status
  - removed the required property `code` from the response with the `401` status
  - …44 more

[Change history](https://skmtc.dev/lance-format/apis/lance-namespace-specification/changes/v1/table/:id/update/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/6790486d1fac/schema)