Query avanzate

Le query avanzate in questa pagina si applicano ai dati di esportazione degli eventi BigQuery per Google Analytics 4. Se stai cercando la stessa risorsa per Universal Analytics, consulta il Libro di ricette BigQuery per Universal Analytics. Prova le query di base prima di quelle avanzate.

Prodotti acquistati dai clienti che hanno acquistato un determinato prodotto

La seguente query mostra quali altri prodotti sono stati acquistati dai clienti che hanno acquistato un prodotto specifico. Questo esempio non presuppone che i prodotti siano stati acquistati nello stesso ordine.

L'esempio ottimizzato si basa sulle funzionalità di scripting di BigQuery per definire una variabile che dichiara gli elementi in base ai quali filtrare. Anche se questo non migliora le prestazioni, questo è un approccio più leggibile per la definizione delle variabili rispetto alla creazione di una tabella con un singolo valore mediante una clausola WITH. La query semplificata utilizza il secondo approccio con la clausola WITH.

La query semplificata crea un elenco separato di "Acquirenti del prodotto A" e crea un'unione con questi dati. La query ottimizzata, invece, crea un elenco di tutti gli articoli acquistati da un utente negli ordini utilizzando la funzione ARRAY_AGG. Successivamente, utilizzando la clausola WHERE esterna, gli elenchi di acquisti di tutti gli utenti vengono filtrati in base a target_item e vengono mostrati solo gli elementi pertinenti.

Semplificato

-- Example: Products purchased by customers who purchased a specific product.
--
-- `Params` is used to hold the value of the selected product and is referenced
-- throughout the query.

WITH
  Params AS (
    -- Replace with selected item_name or item_id.
    SELECT 'Google Navy Speckled Tee' AS selected_product
  ),
  PurchaseEvents AS (
    SELECT
      user_pseudo_id,
      items
    FROM
      -- Replace table name.
      `bigquery-public-data.ga4_obfuscated_sample_ecommerce.events_*`
    WHERE
      -- Replace date range.
      _TABLE_SUFFIX BETWEEN '20201101' AND '20210131'
      AND event_name = 'purchase'
  ),
  ProductABuyers AS (
    SELECT DISTINCT
      user_pseudo_id
    FROM
      Params,
      PurchaseEvents,
      UNNEST(items) AS items
    WHERE
      -- item.item_id can be used instead of items.item_name.
      items.item_name = selected_product
  )
SELECT
  items.item_name AS item_name,
  SUM(items.quantity) AS item_quantity
FROM
  Params,
  PurchaseEvents,
  UNNEST(items) AS items
WHERE
  user_pseudo_id IN (SELECT user_pseudo_id FROM ProductABuyers)
  -- item.item_id can be used instead of items.item_name
  AND items.item_name != selected_product
GROUP BY 1
ORDER BY item_quantity DESC;

Ottimizzata

-- Optimized Example: Products purchased by customers who purchased a specific product.

-- Replace item name
DECLARE target_item STRING DEFAULT 'Google Navy Speckled Tee';

SELECT
  IL.item_name AS item_name,
  SUM(IL.quantity) AS quantity
FROM
  (
    SELECT
      user_pseudo_id,
      ARRAY_AGG(STRUCT(item_name, quantity)) AS item_list
    FROM
      -- Replace table
      `bigquery-public-data.ga4_obfuscated_sample_ecommerce.events_*`, UNNEST(items)
    WHERE
      -- Replace date range
      _TABLE_SUFFIX BETWEEN '20201201' AND '20201210'
      AND event_name = 'purchase'
    GROUP BY
      1
  ),
  UNNEST(item_list) AS IL
WHERE
  target_item IN (SELECT item_name FROM UNNEST(item_list))
  -- Remove the following line if you want the target_item to appear in the results
  AND target_item != IL.item_name
GROUP BY
  item_name
ORDER BY
  quantity DESC;

Importo medio di denaro speso per sessione di acquisto per utente

La seguente query mostra l'importo medio speso per sessione da ogni utente. Vengono prese in considerazione solo le sessioni in cui l'utente ha effettuato un acquisto.

-- Example: Average amount of money spent per purchase session by user.

WITH
  events AS (
    SELECT
      session.value.int_value AS session_id,
      COALESCE(spend.value.int_value, spend.value.float_value, spend.value.double_value, 0.0)
        AS spend_value,
      event.*

    -- Replace table name
    FROM `bigquery-public-data.ga4_obfuscated_sample_ecommerce.events_*` AS event
    LEFT JOIN UNNEST(event.event_params) AS session
      ON session.key = 'ga_session_id'
    LEFT JOIN UNNEST(event.event_params) AS spend
      ON spend.key = 'value'

    -- Replace date range
    WHERE _TABLE_SUFFIX BETWEEN '20201101' AND '20210131'
  )
SELECT
  user_pseudo_id,
  COUNT(DISTINCT session_id) AS session_count,
  SUM(spend_value) / COUNT(DISTINCT session_id) AS avg_spend_per_session_by_user
FROM events
WHERE event_name = 'purchase' and session_id IS NOT NULL
GROUP BY user_pseudo_id

ID e numero sessione più recenti per gli utenti

La seguente query fornisce l'elenco degli ultimi ga_session_id e ga_session_number degli ultimi 4 giorni per un elenco di utenti. Puoi fornire un elenco user_pseudo_id o un elenco user_id.

user_pseudo_id

-- Get the latest ga_session_id and ga_session_number for specific users during last 4 days.

-- Replace timezone. List at https://en.wikipedia.org/wiki/List_of_tz_database_time_zones.
DECLARE REPORTING_TIMEZONE STRING DEFAULT 'America/Los_Angeles';

-- Replace list of user_pseudo_id's with ones you want to query.
DECLARE USER_PSEUDO_ID_LIST ARRAY<STRING> DEFAULT
  [
    '1005355938.1632145814', '979622592.1632496588', '1101478530.1632831095'];

CREATE TEMP FUNCTION GetParamValue(params ANY TYPE, target_key STRING)
AS (
  (SELECT `value` FROM UNNEST(params) WHERE key = target_key LIMIT 1)
);

CREATE TEMP FUNCTION GetDateSuffix(date_shift INT64, timezone STRING)
AS (
  (SELECT FORMAT_DATE('%Y%m%d', DATE_ADD(CURRENT_DATE(timezone), INTERVAL date_shift DAY)))
);

SELECT DISTINCT
  user_pseudo_id,
  FIRST_VALUE(GetParamValue(event_params, 'ga_session_id').int_value)
    OVER (UserWindow) AS ga_session_id,
  FIRST_VALUE(GetParamValue(event_params, 'ga_session_number').int_value)
    OVER (UserWindow) AS ga_session_number
FROM
  -- Replace table name.
  `bigquery-public-data.ga4_obfuscated_sample_ecommerce.events_*`
WHERE
  user_pseudo_id IN UNNEST(USER_PSEUDO_ID_LIST)
  AND RIGHT(_TABLE_SUFFIX, 8)
    BETWEEN GetDateSuffix(-3, REPORTING_TIMEZONE)
    AND GetDateSuffix(0, REPORTING_TIMEZONE)
WINDOW UserWindow AS (PARTITION BY user_pseudo_id ORDER BY event_timestamp DESC);

user_id

-- Get the latest ga_session_id and ga_session_number for specific users during last 4 days.

-- Replace timezone. List at https://en.wikipedia.org/wiki/List_of_tz_database_time_zones.
DECLARE REPORTING_TIMEZONE STRING DEFAULT 'America/Los_Angeles';

-- Replace list of user_id's with ones you want to query.
DECLARE USER_ID_LIST ARRAY<STRING> DEFAULT ['<user_id_1>', '<user_id_2>', '<user_id_n>'];

CREATE TEMP FUNCTION GetParamValue(params ANY TYPE, target_key STRING)
AS (
  (SELECT `value` FROM UNNEST(params) WHERE key = target_key LIMIT 1)
);

CREATE TEMP FUNCTION GetDateSuffix(date_shift INT64, timezone STRING)
AS (
  (SELECT FORMAT_DATE('%Y%m%d', DATE_ADD(CURRENT_DATE(timezone), INTERVAL date_shift DAY)))
);

SELECT DISTINCT
  user_pseudo_id,
  FIRST_VALUE(GetParamValue(event_params, 'ga_session_id').int_value)
    OVER (UserWindow) AS ga_session_id,
  FIRST_VALUE(GetParamValue(event_params, 'ga_session_number').int_value)
    OVER (UserWindow) AS ga_session_number
FROM
  -- Replace table name.
  `bigquery-public-data.ga4_obfuscated_sample_ecommerce.events_*`
WHERE
  user_id IN UNNEST(USER_ID_LIST)
  AND RIGHT(_TABLE_SUFFIX, 8)
    BETWEEN GetDateSuffix(-3, REPORTING_TIMEZONE)
    AND GetDateSuffix(0, REPORTING_TIMEZONE)
WINDOW UserWindow AS (PARTITION BY user_pseudo_id ORDER BY event_timestamp DESC);