mysql查询用户每年每月的订单数量及订单金额

可以使用如下的 SQL 查询语句来查询用户每年每月的订单数量及订单金额：

SELECT
    YEAR(order_date) AS year,
    MONTH(order_date) AS month,
    COUNT(*) AS order_count,
    SUM(order_amount) AS order_total
FROM
    orders
WHERE
    user_id = [用户ID]
GROUP BY
    YEAR(order_date),
    MONTH(order_date)
ORDER BY
    YEAR(order_date),
    MONTH(order_date)

该查询语句会返回每年每月的订单数量和订单金额，以及用户ID，按照年份和月份进行分组，并按时间顺序排序。您可以将查询结果用于图表的制作，并绘制出用户的订单数量和订单金额的趋势图。请注意，在查询中，您需要将 [用户ID] 替换为您需要查询的用户的ID。

如果order_date为时间戳，可以使用FROM_UNIXTIME处理一下

SELECT
    YEAR(FROM_UNIXTIME(order_date)) AS year,
    MONTH(FROM_UNIXTIME(order_date)) AS month,
    COUNT(*) AS order_count,
    SUM(order_amount) AS order_total
FROM
    orders
WHERE
    user_id = [用户ID]
GROUP BY
    YEAR(FROM_UNIXTIME(order_date)),
    MONTH(FROM_UNIXTIME(order_date))
ORDER BY
    YEAR(FROM_UNIXTIME(order_date)),
    MONTH(FROM_UNIXTIME(order_date))