Генерация dds слоя по ТЗ - без тестов
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-- Проверки качества данных для segments
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DO $$
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DECLARE
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v_batch_id TEXT := '{{ run_id }}'::text;
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v_prev_ts TIMESTAMP;
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v_src_count BIGINT;
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v_stg_count BIGINT;
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v_dup_count BIGINT;
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v_null_count BIGINT;
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v_orphan_ticket_count BIGINT;
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v_orphan_flight_count BIGINT;
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BEGIN
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-- Опорная метка: максимум src_created_at_ts среди предыдущих батчей
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SELECT max(src_created_at_ts)
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INTO v_prev_ts
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FROM stg.segments
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WHERE batch_id <> v_batch_id
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OR batch_id IS NULL;
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-- Источник: считаем строки во внешней таблице, которые вошли в окно инкремента
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SELECT COUNT(*)
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INTO v_src_count
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FROM stg.segments_ext AS s
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JOIN stg.tickets_ext AS t ON s.ticket_no = t.ticket_no
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JOIN stg.bookings_ext AS b ON t.book_ref = b.book_ref
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WHERE b.book_date > COALESCE(v_prev_ts, TIMESTAMP '1900-01-01 00:00:00');
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IF v_src_count = 0 THEN
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RAISE EXCEPTION
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'В источнике segments_ext нет строк для окна инкремента (book_date > %).',
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COALESCE(v_prev_ts, TIMESTAMP '1900-01-01 00:00:00');
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END IF;
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-- Считаем строки, реально вставленные в stg.segments в этом батче
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SELECT COUNT(*)
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INTO v_stg_count
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FROM stg.segments
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WHERE batch_id = v_batch_id;
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IF v_src_count <> v_stg_count THEN
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RAISE EXCEPTION
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'DQ FAILED: несовпадение количества строк. Источник: %, STG: %',
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v_src_count,
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v_stg_count;
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END IF;
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-- Проверка на дубликаты (ticket_no, flight_id)
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SELECT COUNT(*) - COUNT(DISTINCT ticket_no || '|' || flight_id)
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INTO v_dup_count
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FROM stg.segments AS s
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WHERE s.batch_id = v_batch_id;
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IF v_dup_count <> 0 THEN
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RAISE EXCEPTION
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'DQ FAILED: найдены дубликаты (ticket_no, flight_id) (batch_id=%): %',
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v_batch_id,
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v_dup_count;
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END IF;
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-- Проверка обязательных полей (ticket_no, flight_id, fare_conditions, price)
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SELECT COUNT(*)
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INTO v_null_count
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FROM stg.segments AS s
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WHERE s.batch_id = v_batch_id
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AND (s.ticket_no IS NULL OR s.ticket_no = ''
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OR s.flight_id IS NULL OR s.flight_id = ''
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OR s.fare_conditions IS NULL OR s.fare_conditions = ''
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OR s.price IS NULL OR s.price = '');
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IF v_null_count <> 0 THEN
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RAISE EXCEPTION
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'DQ FAILED: найдены строки с NULL в обязательных полях (batch_id=%): %',
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v_batch_id,
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v_null_count;
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END IF;
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-- Проверка ссылочной целостности: все segments должны иметь соответствующие tickets
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SELECT COUNT(*)
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INTO v_orphan_ticket_count
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FROM stg.segments AS s
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LEFT JOIN stg.tickets AS t ON s.ticket_no = t.ticket_no
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WHERE s.batch_id = v_batch_id
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AND t.ticket_no IS NULL;
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IF v_orphan_ticket_count <> 0 THEN
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RAISE EXCEPTION
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'DQ FAILED: найдены segments без соответствующих tickets (batch_id=%): %',
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v_batch_id,
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v_orphan_ticket_count;
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END IF;
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-- Проверка ссылочной целостности: все segments должны иметь соответствующие flights
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SELECT COUNT(*)
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INTO v_orphan_flight_count
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FROM stg.segments AS s
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LEFT JOIN stg.flights AS f ON s.flight_id = f.flight_id
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WHERE s.batch_id = v_batch_id
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AND f.flight_id IS NULL;
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IF v_orphan_flight_count <> 0 THEN
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RAISE EXCEPTION
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'DQ FAILED: найдены segments без соответствующих flights (batch_id=%): %',
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v_batch_id,
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v_orphan_flight_count;
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END IF;
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RAISE NOTICE
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'DQ PASSED: segments ок (batch_id=%): source=% stg=%',
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v_batch_id,
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v_src_count,
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v_stg_count;
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END $$;
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