# Update rows in a table

Publish / database

A variant of [Write to a database](https://meridian.online/operations/write-to-a-database).

Change the values of existing rows in a database table, matched by key or condition.

Page: <https://meridian.online/operations/write-to-a-database/update-rows-in-a-table>

## Status

Not built yet.

arcform does not do this yet. [Its place on the roadmap](https://meridian.online/roadmap#write-to-a-database)

## What other tools call it

Meridian's classification; an independent blind rating agreed on 95.7% of 324 rows (variant, version 3).

- Apache DataFusion: [`UPDATE`](https://datafusion.apache.org/user-guide/sql/dml.html) (read 2026-09-27)
- EasyMorph: [`Update database table`](https://help.easymorph.com/doku.php?id=transformations:updatedb) (read 2026-09-27)
- KNIME Analytics Platform: [`DB Updater`](https://api.hub.knime.com/nodes/*V9jL6eoqxUz3Jhyw?details=full) (read 2026-09-27)