ddadmin
85fea19818
- Зачем: - подготовлена учебная реализация ODS слоя с типизацией, UPSERT и DQ, чтобы продолжить работу от STG к DDS/DM. - Что: - добавлены SQL-скрипты `sql/ods/*_ddl.sql`, `sql/ods/*_load.sql`, `sql/ods/*_dq.sql` для 9 сущностей bookings. - добавлены DAG `bookings_ods_ddl` и `bookings_to_gp_ods`, а также smoke-тесты для новых графов. - ODS DDL интегрирован в `sql/ddl_gp.sql`; документация и план обновлены под единый запуск через `make ddl-gp`. - Проверка: - `make test`. - `make ddl-gp`.
94 lines
3.4 KiB
SQL
94 lines
3.4 KiB
SQL
-- Загрузка ODS по flights: SCD1 (UPDATE изменившихся + INSERT новых).
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-- Statement 1: UPDATE существующих строк.
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WITH src AS (
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SELECT
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NULLIF(s.flight_id, '')::INTEGER AS flight_id,
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s.route_no,
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s.status,
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NULLIF(s.scheduled_departure, '')::TIMESTAMP WITH TIME ZONE AS scheduled_departure,
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NULLIF(s.scheduled_arrival, '')::TIMESTAMP WITH TIME ZONE AS scheduled_arrival,
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NULLIF(s.actual_departure, '')::TIMESTAMP WITH TIME ZONE AS actual_departure,
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NULLIF(s.actual_arrival, '')::TIMESTAMP WITH TIME ZONE AS actual_arrival,
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s.src_created_at_ts AS event_ts,
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ROW_NUMBER() OVER (
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PARTITION BY s.flight_id
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ORDER BY s.src_created_at_ts DESC NULLS LAST, s.load_dttm DESC
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) AS rn
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FROM stg.flights 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.flights AS o
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SET route_no = s.route_no,
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status = s.status,
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scheduled_departure = s.scheduled_departure,
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scheduled_arrival = s.scheduled_arrival,
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actual_departure = s.actual_departure,
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actual_arrival = s.actual_arrival,
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event_ts = s.event_ts,
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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.flight_id = s.flight_id
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AND (
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o.route_no IS DISTINCT FROM s.route_no
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OR o.status IS DISTINCT FROM s.status
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OR o.scheduled_departure IS DISTINCT FROM s.scheduled_departure
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OR o.scheduled_arrival IS DISTINCT FROM s.scheduled_arrival
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OR o.actual_departure IS DISTINCT FROM s.actual_departure
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OR o.actual_arrival IS DISTINCT FROM s.actual_arrival
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OR o.event_ts IS DISTINCT FROM s.event_ts
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);
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-- Statement 2: INSERT новых строк.
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WITH src AS (
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SELECT
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NULLIF(s.flight_id, '')::INTEGER AS flight_id,
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s.route_no,
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s.status,
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NULLIF(s.scheduled_departure, '')::TIMESTAMP WITH TIME ZONE AS scheduled_departure,
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NULLIF(s.scheduled_arrival, '')::TIMESTAMP WITH TIME ZONE AS scheduled_arrival,
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NULLIF(s.actual_departure, '')::TIMESTAMP WITH TIME ZONE AS actual_departure,
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NULLIF(s.actual_arrival, '')::TIMESTAMP WITH TIME ZONE AS actual_arrival,
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s.src_created_at_ts AS event_ts,
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ROW_NUMBER() OVER (
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PARTITION BY s.flight_id
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ORDER BY s.src_created_at_ts DESC NULLS LAST, s.load_dttm DESC
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) AS rn
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FROM stg.flights 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.flights (
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flight_id,
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route_no,
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status,
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scheduled_departure,
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scheduled_arrival,
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actual_departure,
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actual_arrival,
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event_ts,
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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.flight_id,
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s.route_no,
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s.status,
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s.scheduled_departure,
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s.scheduled_arrival,
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s.actual_departure,
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s.actual_arrival,
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s.event_ts,
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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.flights AS o
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WHERE o.flight_id = s.flight_id
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);
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ANALYZE ods.flights;
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