如何每月迭代bigquery代碼？

Question

我想重複下面的代碼與按月，這樣我可以爲月度數據的畫面儀表盤脫機每個月誰去：

SELECT 
    Deal_ID, 
    Category, 
    MONTH(date), 
    YEAR(date) 
FROM [big-query-1233:BI_Automation.live_deals_history_since_15_sep] 
WHERE 
    MONTH(date) = 4 AND 
    Deal_ID NOT IN (
     SELECT Deal_id 
     FROM [big-query-1233:BI_Automation.live_deals_history_since_15_sep] 
     WHERE MONTH(date) = 5 
    ) 

Answer 1

希望這將有助於讓你開始。注意，它使用標準的SQL，而不是傳統的SQL與BigQuery：

SELECT 
    Deal_ID, 
    ‎Category, 
    ‎EXTRACT(MONTH FROM date) AS month, 
    ANY_VALUE(EXTRACT(YEAR FROM date)) AS year 
FROM `big-query-1233.BI_Automation.live_deals_history_since_15_sep` AS t1 
WHERE NOT EXISTS (
    SELECT 1 
    FROM `big-query-1233.BI_Automation.live_deals_history_since_15_sep` AS t2 
    ‎WHERE 
    t1.Deal_ID = t2.Deal_ID AND 
    ‎DATE_ADD(DATE_TRUNC(t1.date, MONTH), INTERVAL 1 MONTH) = 
    ‎ DATE_TRUNC(t2.date, MONTH) 
) 
GROUP BY Deal_ID, Category, month 
ORDER BY month, Deal_ID; 

Answer 2

下面是BigQuery的標準SQL和避免使用JOIN和，而使用分析功能

#standardSQL 
SELECT 
    Deal_ID, Category, 
    EXTRACT(MONTH FROM month) AS month, 
    EXTRACT(YEAR FROM month) AS year 
FROM (
    SELECT 
    Deal_ID, Category, month, 
    LEAD(month) OVER(PARTITION BY Deal_ID, Category ORDER BY month) AS next_month 
    FROM (
    SELECT 
     Deal_ID, Category, 
     DATE_TRUNC(DATE, MONTH) month 
    FROM `big-query-1233.BI_Automation.live_deals_history_since_15_sep` 
    GROUP BY Deal_ID, Category, month 
) 
) 
WHERE DATE_DIFF(next_month, month, MONTH) > 1 
-- ORDER BY month, Deal_ID, Category 

您可以測試/玩它使用下面的虛擬數據

#standardSQL 
WITH `big-query-1233.BI_Automation.live_deals_history_since_15_sep` AS (
    SELECT 1 AS Deal_ID, 1 AS Category, DATE '2017-01-01' AS DATE UNION ALL 
    SELECT 1, 1, DATE '2017-01-02' UNION ALL 
    SELECT 1, 1, DATE '2017-02-02' UNION ALL 
    SELECT 1, 1, DATE '2017-02-15' UNION ALL 
    SELECT 1, 1, DATE '2017-03-15' UNION ALL 
    SELECT 1, 1, DATE '2017-04-15' UNION ALL 
    SELECT 1, 1, DATE '2017-06-15' UNION ALL 
    SELECT 1, 1, DATE '2017-07-07' UNION ALL 
    SELECT 1, 1, DATE '2017-08-22' UNION ALL 
    SELECT 1, 1, DATE '2017-12-12' 
) 
SELECT 
    Deal_ID, Category, 
    EXTRACT(MONTH FROM month) AS month, 
    EXTRACT(YEAR FROM month) AS year 
FROM (
    SELECT 
    Deal_ID, Category, month, 
    LEAD(month) OVER(PARTITION BY Deal_ID, Category ORDER BY month) AS next_month 
    FROM (
    SELECT 
     Deal_ID, Category, 
     DATE_TRUNC(DATE, MONTH) month 
    FROM `big-query-1233.BI_Automation.live_deals_history_since_15_sep` 
    GROUP BY Deal_ID, Category, month 
) 
) 
WHERE DATE_DIFF(next_month, month, MONTH) > 1 
ORDER BY month, Deal_ID, Category  

注：目前尚不清楚，如果你需要的客戶數量或客戶只是名單 上面給你列出
但是如果你需要計數 - 你只需要添加額外的GROUP BY和COUNT，因爲它是低於

#standardSQL 
SELECT 
    Category, 
    EXTRACT(MONTH FROM month) AS month, 
    EXTRACT(YEAR FROM month) AS year, 
    COUNT(Deal_ID) AS customers 
FROM (
    SELECT 
    Deal_ID, Category, month, 
    LEAD(month) OVER(PARTITION BY Deal_ID, Category ORDER BY month) AS next_month 
    FROM (
    SELECT 
     Deal_ID, Category, 
     DATE_TRUNC(DATE, MONTH) month 
    FROM `big-query-1233.BI_Automation.live_deals_history_since_15_sep` 
    GROUP BY Deal_ID, Category, month 
) 
) 
WHERE DATE_DIFF(next_month, month, MONTH) > 1 
GROUP BY month, year, Category 
ORDER BY month, year, Category