# dbt Core v0.9.0 — Release & Upgrade Intelligence
- **Product:** dbt Core (https://www.getdbt.com)
- **Version:** v0.9.0
- **Released:** Oct 26, 2017
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/dbt-core/updates/v0.9.0/

## Executive Summary (TL;DR)
dbt Core v0.9.0. Source highlight: This release focuses on improvements to macros, materializations, and package management. Check out the blog post to learn more about what's possible in this new version of dbt.

## Breaking Changes & Deprecations
- Breaking Changes - `adapter` functions must be namespaced to the `adapter` context variable. To fix this error, use `adapter.already_exists` instead of just `already_exists`, or similar for other [adapter functions](https://docs.getdbt.com/reference#adapter).

## Improvements
- BigQuery improvements

## Bug Fixes
- `adapter` functions must be namespaced to the `adapter` context variable. To fix this error, use `adapter.already_exists` instead of just `already_exists`, or similar for other adapter functions.
- Handle lingering `__dbt_tmp` relations (#511)
- Run tests defined in an ephemeral directory (#509)