Add unique constraint on stages name and festival_edition_id#28
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Add unique constraint on stages name and festival_edition_id#28
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Required for CSV import upsert with ON CONFLICT specification. https://claude.ai/code/session_01DpTFYTgNZPgZCCD2YNQsot
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chiptus
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May 11, 2026
The migration was failing on staging because (a) the artists.slug dedup suffix wasn't guaranteed unique — using just the first 6 chars of the id can still collide — and (b) stages had duplicate (edition, name) pairs in prod that blocked the new unique constraint outright. Switch both dedups to append the full id, which is guaranteed unique. Add a stages dedup mirroring the artists one. Wrap both ADD CONSTRAINT statements in DO blocks that skip if a constraint of the same name (or the equivalent stages_name_festival_edition_id_key from PR #28) already exists, so the migration is safe to re-run.
chiptus
added a commit
that referenced
this pull request
May 11, 2026
The migration was failing on staging because (a) the artists.slug dedup suffix wasn't guaranteed unique — using just the first 6 chars of the id can still collide — and (b) stages had duplicate (edition, name) pairs in prod that blocked the new unique constraint outright. Switch both dedups to append the full id, which is guaranteed unique. Add a stages dedup mirroring the artists one. Wrap both ADD CONSTRAINT statements in DO blocks that skip if a constraint of the same name (or the equivalent stages_name_festival_edition_id_key from PR #28) already exists, so the migration is safe to re-run.
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Summary
This migration adds a unique constraint to the
stagestable to ensure that stage names are unique within each festival edition.Key Changes
stages_name_festival_edition_id_keyon the combination ofnameandfestival_edition_idcolumns in thestagestableImplementation Details
This constraint prevents duplicate stage names from being created for the same festival edition, while still allowing the same stage name to exist across different festival editions. This maintains data integrity and ensures consistent stage identification within each festival's context.
https://claude.ai/code/session_01DpTFYTgNZPgZCCD2YNQsot