DBT Snapshots Failing with SQL Compilation Error After Package Updates

Last updated: November 4, 2025

Problem Description

  DBT snapshots suddenly start failing across all environments with SQL compilation errors. This typically occurs after package updates when dependencies are not properly pinned, causing macro compilation issues that generate malformed SQL queries.

Symptoms

  • All DBT snapshots failing simultaneously across multiple environments

  • SQL compilation error with syntax errors: "syntax error line 15 at position 21 unexpected ')'"

  • Error code 001003 (42000) from Snowflake

  • Local environments work until packages are reinstalled/upgraded

Root Cause

  Package updates affecting macro compilation in DBT, particularly when dependencies are not pinned to specific versions. Updated packages can introduce changes to macros that generate malformed SQL for snapshot operations.

Solution

  Reset your DBT environment to clear cached dependencies and reinstall packages

Step-by-Step Resolution

  1. Check your packages.yml file for recent dependency updates that may have caused the issue

  2. Run the following command to clean and reinstall dependencies:

    dbt clean && dbt deps

  3. Test your snapshots again to verify the issue is resolved

Alternative Solutions (if applicable)

  If the above doesn't work, check for Snowflake configuration changes in your environment or review any DBT variable/macro changes that might affect SQL generation

Prevention

  Pin package versions in your packages.yml file to prevent automatic updates from breaking your snapshots. Regularly test snapshot functionality after any package updates in a development environment before deploying to production.