Moheeb Zara
832a0aeba2
Data-only, idempotent (NULL member_id only): links each prior unlinked form_submission to the earliest-joined matching space_member by (space_id, lower(email)=lower(submitter_email)). Not mirrored in schema.sql (fresh DB has no submissions). Documented in DATABASE_SCHEMA + DB_SCHEMA_MAP (migration range bumped to 039).
36 lines
1.5 KiB
SQL
36 lines
1.5 KiB
SQL
-- =============================================================================
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-- 039: Backfill -- associate existing form submissions with members by email
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-- =============================================================================
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-- One-time DATA backfill (no structural change; form_submissions.member_id
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-- already exists). Links every unlinked submission to the member in the same
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-- space whose email matches submitter_email (case-insensitive). When more
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-- than one member shares an email in a space, the earliest-joined one is
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-- chosen so the result is deterministic and matches the application logic
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-- (lib/forms-logic.ts pickMemberForEmail).
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--
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-- Idempotent: only rows with member_id IS NULL are touched, so re-running is
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-- a no-op. Not mirrored in scripts/schema.sql (a fresh database has no
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-- submissions to backfill); the ongoing linking happens in the app
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-- (submitForm + linkSubmissionsByEmail on member create/email-change).
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-- =============================================================================
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UPDATE public.form_submissions fs
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SET member_id = (
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SELECT m.id
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FROM public.space_members m
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WHERE m.space_id = fs.space_id
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AND m.email IS NOT NULL
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AND lower(m.email) = lower(fs.submitter_email)
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ORDER BY m.joined_at ASC NULLS FIRST, m.id ASC
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LIMIT 1
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)
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WHERE fs.member_id IS NULL
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AND fs.submitter_email IS NOT NULL
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AND EXISTS (
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SELECT 1
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FROM public.space_members m
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WHERE m.space_id = fs.space_id
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AND m.email IS NOT NULL
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AND lower(m.email) = lower(fs.submitter_email)
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);
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