[MySQL] 년월일 추이 통계 구할때 유용함

특정 기간에 대해 품별 합계를 구할 때

SELECT
    stock_idx,
    product_name,
    color_number,
    color_name,
    SUM(len) AS sum_len,
    order_date
FROM
    sales_item_view
WHERE
    order_date > '2015-04-06'
        AND order_date < '2015-04-07'
GROUP BY order_date
ORDER BY sum_len DESC;

 

 

3월에 해당되는 판매량의 합계를 각 일마다 보여줘라.
SELECT
    SUM(len) AS sum_len,
    EXTRACT(DAY FROM order_date) as whatDAY,
    order_date
FROM
    sales_item_view
WHERE
    order_date like '2015-03-%'
GROUP BY whatDAY
ORDER BY whatDAY;