這應該讓你上個月的計數(即,過去4周),包括周其中計數爲每個站點id爲0。如果您有一個站點表來從中獲取站點ID,則意味着交叉連接到子查詢可以用一個簡單的交叉連接替換爲一個表。
這會生成一系列從0到5的數字,並從當前日期中減去該週數,格式爲給出結果周的週日和週六,並檢查結束周是當前日期之間的一週並且當前日期減去1個月(以這種方式完成,而不是僅僅減去4周以應付可變長度的月份)。
SELECT Weeks.aWeek_start, Weeks.aWeek_end, all_site_id.site_id, COUNT(tracker_click.id)
FROM
(
SELECT STR_TO_DATE(DATE_FORMAT(DATE_SUB(NOW(), INTERVAL units.i WEEK), '%Y%U Sunday 00:00:00'), '%X%V %W %H:%i:%s') AS aWeek_start,
STR_TO_DATE(DATE_FORMAT(DATE_SUB(NOW(), INTERVAL units.i WEEK), '%Y%U Saturday 23:59:59'), '%X%V %W %H:%i:%s') AS aWeek_end
FROM (SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5)units
WHERE DATE_FORMAT(DATE_SUB(NOW(), INTERVAL units.i WEEK), '%Y%U') BETWEEN DATE_FORMAT(DATE_SUB(NOW(), INTERVAL 1 MONTH), '%Y%U') AND DATE_FORMAT(NOW(), '%Y%U')
) Weeks
CROSS JOIN
(
SELECT DISTINCT site_id
FROM tracker_click
) AS all_site_id
LEFT OUTER JOIN tracker_click
ON tracker_click.CREATED_AT BETWEEN Weeks.aWeek_start AND Weeks.aWeek_end
AND tracker_click.site_id = all_site_id.site_id
GROUP BY Weeks.aWeek_start, Weeks.aWeek_end, all_site_id.site_id
類似的查詢可以完成全年
SELECT Months.aMonth_start, Months.aMonth_end, all_site_id.site_id, COUNT(tracker_click.id)
FROM
(
SELECT DATE_FORMAT(DATE_SUB(NOW(), INTERVAL units.i MONTH), '%Y/%m/01 00:00:00') AS aMonth_start,
DATE_FORMAT(LAST_DAY(DATE_SUB(NOW(), INTERVAL units.i MONTH)), '%Y/%m/%d 23:59:59') AS aMonth_end
FROM (SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9 UNION SELECT 10 UNION SELECT 11)units
) Months
CROSS JOIN
(
SELECT DISTINCT site_id
FROM tracker_click
) AS all_site_id
LEFT OUTER JOIN tracker_click
ON tracker_click.CREATED_AT BETWEEN Months.aMonth_start AND Months.aMonth_end
AND tracker_click.site_id = all_site_id.site_id
GROUP BY Months.aMonth_start, Months.aMonth_end, all_site_id.site_id
要做到這一點的幾個月,假設你要個月上市,其中計數爲零,爲你生成所需的時間週期的列表,然後左邊加入你的數據。 – Kickstart