0351e967c0
Backend: migration 007 adds a case-insensitive unique index on user names per event. join endpoint returns 409 conflict when the name is taken. find_by_event_and_name uses LOWER() for case-insensitive recovery. Frontend: join page handles 409 with a name-taken view — amber warning, name-choice tips, inline PIN recovery form, and "Anderen Namen wählen" button. Test guide updated with Steps 8 and 9. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
16 lines
557 B
SQL
16 lines
557 B
SQL
-- Deduplicate users with the same name (case-insensitive) per event,
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-- keeping the oldest account so no real data is lost.
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DELETE FROM "user"
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WHERE id NOT IN (
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SELECT DISTINCT ON (event_id, LOWER(display_name)) id
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FROM "user"
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ORDER BY event_id, LOWER(display_name), created_at ASC
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);
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-- Drop the old non-unique index (replaced below)
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DROP INDEX IF EXISTS idx_user_event_name;
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-- Unique index enforces one account per name per event (case-insensitive)
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CREATE UNIQUE INDEX idx_user_event_name_ci
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ON "user" (event_id, LOWER(display_name));
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