152 lines
4.5 KiB
Plaintext
152 lines
4.5 KiB
Plaintext
1. get db backup
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2.
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npx prisma migrate dev --create-only --name remove-category-add-titlekey
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3. paste this code in migration file:
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```
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-- migration.sql
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BEGIN;
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-- 0) Safety check: ensure table exists
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SELECT 1 FROM pg_tables WHERE schemaname = current_schema() AND tablename = 'PdfGroup';
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-- If above returns nothing, stop and check table name/casing.
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-- 1) Create the new enum type for Prisma final enum: PdfTitleKey
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DO $$
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BEGIN
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IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'PdfTitleKey') THEN
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CREATE TYPE "PdfTitleKey" AS ENUM (
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'INSURANCE_CLAIM',
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'ELIGIBILITY_STATUS',
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'CLAIM_STATUS',
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'OTHER'
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);
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END IF;
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END$$;
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-- 2) Add the temporary nullable column titleKey_new of that enum type
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ALTER TABLE "PdfGroup" ADD COLUMN IF NOT EXISTS "titleKey_new" "PdfTitleKey";
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-- 3) Populate titleKey_new from the existing columns
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-- Mapping rules:
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-- - If titleKey exists, prefer it (map INSURANCE_STATUS_PDFs -> ELIGIBILITY_STATUS)
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-- - Else, if category exists use that mapping
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-- - Else fallback to 'OTHER'
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UPDATE "PdfGroup"
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SET "titleKey_new" = (
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CASE
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WHEN "titleKey" IS NOT NULL THEN
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CASE "titleKey"
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WHEN 'INSURANCE_CLAIM' THEN 'INSURANCE_CLAIM'::"PdfTitleKey"
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WHEN 'INSURANCE_STATUS_PDFs' THEN 'ELIGIBILITY_STATUS'::"PdfTitleKey" -- renamed mapping
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WHEN 'OTHER' THEN 'OTHER'::"PdfTitleKey"
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ELSE 'OTHER'::"PdfTitleKey"
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END
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WHEN "category" IS NOT NULL THEN
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CASE "category"
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WHEN 'CLAIM' THEN 'INSURANCE_CLAIM'::"PdfTitleKey"
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WHEN 'ELIGIBILITY_STATUS' THEN 'ELIGIBILITY_STATUS'::"PdfTitleKey"
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WHEN 'CLAIM_STATUS' THEN 'CLAIM_STATUS'::"PdfTitleKey"
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WHEN 'OTHER' THEN 'OTHER'::"PdfTitleKey"
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ELSE 'OTHER'::"PdfTitleKey"
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END
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ELSE 'OTHER'::"PdfTitleKey"
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END
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)
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WHERE "titleKey_new" IS NULL; -- only set rows that aren't populated
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-- 4) Sanity check: abort if any rows failed to populate
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-- If this returns > 0 you should inspect before continuing.
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DO $$
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DECLARE
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cnt int;
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BEGIN
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SELECT COUNT(*) INTO cnt FROM "PdfGroup" WHERE "titleKey_new" IS NULL;
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IF cnt > 0 THEN
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RAISE NOTICE 'Warning: % PdfGroup rows have NULL titleKey_new after mapping', cnt;
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-- We don't abort automatically; you can uncomment next line to abort.
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-- RAISE EXCEPTION 'Migration aborted: not all rows have titleKey_new';
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END IF;
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END$$;
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-- 5) Drop index on category if it exists (index name varies by setup).
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-- We attempt to find any index that uses category on PdfGroup and drop it.
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DO $$
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DECLARE
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idx record;
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BEGIN
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FOR idx IN
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SELECT indexname
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FROM pg_indexes
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WHERE tablename = 'PdfGroup' AND indexdef LIKE '%("category"%'
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LOOP
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EXECUTE format('DROP INDEX IF EXISTS %I;', idx.indexname);
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END LOOP;
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END$$;
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-- 6) Drop the category column
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ALTER TABLE "PdfGroup" DROP COLUMN IF EXISTS "category";
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-- 7) Drop index on old titleKey if exists (index name may vary)
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DO $$
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DECLARE
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idx record;
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BEGIN
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FOR idx IN
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SELECT indexname
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FROM pg_indexes
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WHERE tablename = 'PdfGroup' AND indexdef LIKE '%("titleKey"%'
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LOOP
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EXECUTE format('DROP INDEX IF EXISTS %I;', idx.indexname);
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END LOOP;
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END$$;
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-- 8) Drop the old titleKey column (which uses the old enum PdfTitle)
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ALTER TABLE "PdfGroup" DROP COLUMN IF EXISTS "titleKey";
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-- 9) Rename the new column to titleKey
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ALTER TABLE "PdfGroup" RENAME COLUMN "titleKey_new" TO "titleKey";
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-- 10) Recreate index on titleKey
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CREATE INDEX IF NOT EXISTS "PdfGroup_titleKey_idx" ON "PdfGroup" ("titleKey");
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-- 11) Drop the old enum types if they are no longer used
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-- Only drop if no columns are using them.
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DO $$
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BEGIN
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-- Drop old PdfTitle enum if exists and unused
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IF EXISTS (SELECT 1 FROM pg_type WHERE typname = 'PdfTitle') THEN
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IF NOT EXISTS (
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SELECT 1 FROM pg_attribute a
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JOIN pg_class c ON a.attrelid = c.oid
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JOIN pg_namespace n ON c.relnamespace = n.oid
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WHERE a.atttypid = (SELECT oid FROM pg_type WHERE typname = 'PdfTitle')
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) THEN
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EXECUTE 'DROP TYPE IF EXISTS "PdfTitle"';
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END IF;
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END IF;
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-- Drop old PdfCategory enum similarly
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IF EXISTS (SELECT 1 FROM pg_type WHERE typname = 'PdfCategory') THEN
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IF NOT EXISTS (
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SELECT 1 FROM pg_attribute a
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JOIN pg_class c ON a.attrelid = c.oid
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JOIN pg_namespace n ON c.relnamespace = n.oid
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WHERE a.atttypid = (SELECT oid FROM pg_type WHERE typname = 'PdfCategory')
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) THEN
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EXECUTE 'DROP TYPE IF EXISTS "PdfCategory"';
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END IF;
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END IF;
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END$$;
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COMMIT;
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```
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4. apply migrate:
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npx prisma migrate dev
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done, |