SQL查询报告

Question

我刚开始学习MySQL。我想运行一个查询，每周给我一个销售量。

到目前为止，我只有：

SELECT sku,SUM(qty_ordered) FROM sales_flat_order_item
WHERE created_at BETWEEN NOW()-INTERVAL 122 WEEK AND NOW()
GROUP BY sku

Answer 1

您还需要GROUP BY WEEK()

SELECT sku, YEAR(created_at), WEEK(created_at) as week_no, SUM(qty_ordered)
FROM sales_flat_order_item
WHERE created_at BETWEEN NOW()-INTERVAL 122 WEEK AND NOW()
GROUP BY sku, YEAR(created_at), WEEK(created_at)

或者如果你想要第一个和sku：

SELECT YEAR(created_at) as year_created, WEEK(created_at) as week_no, sku, SUM(qty_ordered)
FROM sales_flat_order_item
WHERE created_at BETWEEN NOW()-INTERVAL 122 WEEK AND NOW()
GROUP BY YEAR(created_at), WEEK(created_at), sku