Finding what a column change would break with dbt's lineage graph

Someone wants to rename a column. What breaks downstream if they do?

IntermediateRead 5 minDoing: an hour or two, more if a lot of nodes need checking by hand6 steps

What you'll have at the end

The narrowed list of exactly which downstream models, tests, and dashboards a column touches, confirmed against their own code and against the people who track anything the graph can't see, instead of the graph's whole-model guess.

Before you start

You need

A dbt project with downstream models already built on the column you're about to rename, and a target you're allowed to run builds against without touching anyone else's data.

Not covered

Fixing every place the search turns up, or deciding whether the rename is worth doing in the first place.

Leans on

6 steps

Where to go next

Give dbt a dev target

Run the narrowed rebuild somewhere you can afford to break, instead of against a target real reports read from.

Checked 25 Aug 2026

Part of the dbt (Data Build Tool) cookbook