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`.
70 lines
2.1 KiB
SQL
70 lines
2.1 KiB
SQL
-- Загрузка ODS по bookings: 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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s.book_ref,
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NULLIF(s.book_date, '')::TIMESTAMP WITH TIME ZONE AS book_date,
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NULLIF(s.total_amount, '')::NUMERIC(10,2) AS total_amount,
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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.book_ref
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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.bookings 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.bookings AS o
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SET book_date = s.book_date,
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total_amount = s.total_amount,
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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.book_ref = s.book_ref
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AND (
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o.book_date IS DISTINCT FROM s.book_date
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OR o.total_amount IS DISTINCT FROM s.total_amount
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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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s.book_ref,
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NULLIF(s.book_date, '')::TIMESTAMP WITH TIME ZONE AS book_date,
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NULLIF(s.total_amount, '')::NUMERIC(10,2) AS total_amount,
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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.book_ref
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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.bookings 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.bookings (
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book_ref,
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book_date,
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total_amount,
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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.book_ref,
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s.book_date,
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s.total_amount,
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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.bookings AS o
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WHERE o.book_ref = s.book_ref
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);
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ANALYZE ods.bookings;
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