ddadmin
5efb833837
- Зачем:
- источник хранит мультиязычные названия как JSON ({"en": "...", "ru": "..."}),
- для упрощения downstream-логики (DDS/DM) нужны чистые строки на одном языке.
- Что:
- добавлен парсинг JSON с извлечением поля 'ru' в sql/ods/airports_load.sql
(airport_name, city, country).
- добавлен парсинг JSON с извлечением поля 'ru' в sql/ods/airplanes_load.sql
(model).
- обновлена документация docs/internal/bookings_ods_design.md с примечаниями
о нормализации.
- обновлены тестовые данные в tests/test_ods_snapshot_integration.py для
соответствия JSON-формату STG.
- Проверка:
- uv run make test (15 passed).
- SELECT airport_name FROM ods.airports → "Аль-Баха" (вместо JSON).
109 lines
3.5 KiB
SQL
109 lines
3.5 KiB
SQL
-- Загрузка ODS по airports: SCD1 (UPDATE изменившихся + INSERT новых).
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-- Statement 1: UPDATE существующих строк.
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-- Нормализация JSON: извлекаем русские названия из полей с мультиязычностью.
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-- Почему: источник хранит переводы как {"en": "...", "ru": "..."},
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-- в ODS оставляем только один язык для упрощения downstream-логики.
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WITH src AS (
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SELECT
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s.airport_code,
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s.airport_name::json->>'ru' AS airport_name,
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s.city::json->>'ru' AS city,
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s.country::json->>'ru' AS country,
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s.coordinates,
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s.timezone,
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ROW_NUMBER() OVER (
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PARTITION BY s.airport_code
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ORDER BY s.load_dttm DESC, s.src_created_at_ts DESC NULLS LAST
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) AS rn
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FROM stg.airports AS s
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WHERE s.batch_id = '{{ ti.xcom_pull(task_ids="resolve_stg_batch_id") }}'::text
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)
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UPDATE ods.airports AS o
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SET airport_name = s.airport_name,
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city = s.city,
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country = s.country,
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coordinates = s.coordinates,
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timezone = s.timezone,
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_load_id = '{{ ti.xcom_pull(task_ids="resolve_stg_batch_id") }}'::text,
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_load_ts = now()
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FROM src AS s
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WHERE s.rn = 1
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AND o.airport_code = s.airport_code
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AND (
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o.airport_name IS DISTINCT FROM s.airport_name
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OR o.city IS DISTINCT FROM s.city
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OR o.country IS DISTINCT FROM s.country
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OR o.coordinates IS DISTINCT FROM s.coordinates
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OR o.timezone IS DISTINCT FROM s.timezone
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);
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-- Statement 2: INSERT новых строк.
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-- Нормализация JSON: извлекаем русские названия из полей с мультиязычностью.
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WITH src AS (
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SELECT
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s.airport_code,
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s.airport_name::json->>'ru' AS airport_name,
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s.city::json->>'ru' AS city,
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s.country::json->>'ru' AS country,
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s.coordinates,
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s.timezone,
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ROW_NUMBER() OVER (
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PARTITION BY s.airport_code
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ORDER BY s.load_dttm DESC, s.src_created_at_ts DESC NULLS LAST
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) AS rn
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FROM stg.airports AS s
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WHERE s.batch_id = '{{ ti.xcom_pull(task_ids="resolve_stg_batch_id") }}'::text
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)
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INSERT INTO ods.airports (
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airport_code,
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airport_name,
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city,
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country,
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coordinates,
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timezone,
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_load_id,
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_load_ts
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)
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SELECT
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s.airport_code,
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s.airport_name,
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s.city,
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s.country,
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s.coordinates,
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s.timezone,
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'{{ ti.xcom_pull(task_ids="resolve_stg_batch_id") }}'::text,
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now()
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FROM src AS s
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WHERE s.rn = 1
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AND NOT EXISTS (
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SELECT 1
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FROM ods.airports AS o
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WHERE o.airport_code = s.airport_code
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);
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-- Statement 3: DELETE ключей, которых нет в snapshot текущего батча.
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-- Это делает ODS для справочника действительно "current state".
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WITH src_keys AS (
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SELECT d.airport_code
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FROM (
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SELECT
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s.airport_code,
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ROW_NUMBER() OVER (
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PARTITION BY s.airport_code
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ORDER BY s.load_dttm DESC, s.src_created_at_ts DESC NULLS LAST
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) AS rn
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FROM stg.airports AS s
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WHERE s.batch_id = '{{ ti.xcom_pull(task_ids="resolve_stg_batch_id") }}'::text
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) AS d
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WHERE d.rn = 1
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)
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DELETE FROM ods.airports AS o
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WHERE NOT EXISTS (
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SELECT 1
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FROM src_keys AS s
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WHERE s.airport_code = o.airport_code
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);
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ANALYZE ods.airports;
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