R524809
66 lines
2.5 KiB
SQL
66 lines
2.5 KiB
SQL
\set ON_ERROR_STOP on
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BEGIN ISOLATION LEVEL REPEATABLE READ READ ONLY;
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SET LOCAL TIME ZONE 'UTC';
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-- 只读导出本地内容，防止误把另一环境的数据当作本次内容来源。
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DO $$
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BEGIN
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IF current_database() <> 'doodle_dev' THEN
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RAISE EXCEPTION '导出只允许读取 doodle_dev';
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END IF;
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IF EXISTS (
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SELECT 1 FROM public._prisma_migrations
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WHERE finished_at IS NULL AND rolled_back_at IS NULL
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) THEN
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RAISE EXCEPTION '源库存在未完成迁移，请先核查';
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END IF;
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END $$;
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WITH asset_ids AS (
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SELECT preview_asset_id AS id FROM public.worksheets
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UNION
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SELECT icon_asset_id FROM public.categories WHERE icon_asset_id IS NOT NULL
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)
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SELECT jsonb_build_object(
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'format', 'doodle-content-v1',
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'source_database', current_database(),
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'exported_at', transaction_timestamp(),
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'migration_history', (
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SELECT COALESCE(jsonb_agg(jsonb_build_object(
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'name', migration_name, 'checksum', checksum
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) ORDER BY migration_name), '[]'::jsonb)
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FROM public._prisma_migrations
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WHERE finished_at IS NOT NULL AND rolled_back_at IS NULL
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),
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-- 按字段名比较签名，兼容经旧 SQL 初始化、字段物理顺序不同的本地库。
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'column_signature', (
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SELECT jsonb_agg(jsonb_build_object(
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'table', c.relname, 'column', a.attname,
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'type', format_type(a.atttypid, a.atttypmod), 'not_null', a.attnotnull
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) ORDER BY c.relname, a.attname)
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FROM pg_attribute a
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JOIN pg_class c ON c.oid = a.attrelid
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JOIN pg_namespace n ON n.oid = c.relnamespace
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WHERE n.nspname = 'public' AND c.relname IN ('assets', 'categories', 'worksheets')
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AND a.attnum > 0 AND NOT a.attisdropped
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),
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'excluded_relations', jsonb_build_object(
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'worksheet_grades', (SELECT count(*) FROM public.worksheet_grades),
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'worksheet_resources', (SELECT count(*) FROM public.worksheet_resources),
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'worksheet_resource_assets', (SELECT count(*) FROM public.worksheet_resource_assets)
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),
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'assets', (
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SELECT COALESCE(jsonb_agg(to_jsonb(a) ORDER BY a.id), '[]'::jsonb)
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FROM public.assets a JOIN asset_ids r ON r.id = a.id
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),
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'categories', (
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SELECT COALESCE(jsonb_agg(to_jsonb(c) ORDER BY c.id), '[]'::jsonb)
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FROM public.categories c
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),
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'worksheets', (
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SELECT COALESCE(jsonb_agg(to_jsonb(w) ORDER BY w.id), '[]'::jsonb)
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FROM public.worksheets w
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)
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);
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COMMIT;
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