Question

我创建了一个Jython查询，该查询从redshift表中返回信息：

cursor = context.cursor()
cursor.execute('WITH t1 as (SELECT date, partner AS partner, 
revenue AS revenue, avg(revenue)OVER (partition BY 
partner ORDER BY date ROWS BETWEEN 7 preceding AND 1 PRECEDING) as 
"7-day avg"FROM (SELECT date, partner, sum(revenue) as 
revenue FROM data.base GROUP BY date, 
partner))SELECT * FROM t1 WHERE date = CURRENT_DATE - 1 ORDER BY 
revenue DESC')

然后：

for item in cursor.fetchall():
    print item

返回：

(datetime.date(2018, 9, 4), u'Disney', 458.171787, 487.70715842857)
(datetime.date(2018, 9, 4), u'Amazon', 142.33, 741.864285714284)
(datetime.date(2018, 9, 4), u'Google', 82.26, 83.510000000002)

我遇到麻烦的地方是将其变成易于阅读的表格，可以通过SES通过电子邮件发送出去。理想情况下，最终版本应类似于：

| Date       | Partner | Revenue | Avg    |
|------------|---------|---------|--------|
| 2018-09-04 | Disney  | 458.17  | 487.71 |
| 2018-09-04 | Amazon  | 142.33  | 741.86 |
| 2018-09-04 | Google  | 82.26   | 83.51  |

另一个限制因素是我没有安装软件包的权限，因此我只能使用基本的Jython或Python。

Answer 1

这是我如何获得所需格式的方法：

//global
auto mymutex = std::mutex{};

std::future<std::vector<double>> EMX_Counter::getEmxEfficiency()  {
    return std::async([=]() {
        std::vector<double> temp;               

        std::for_each(std::execution::par, WiresList.begin(), WiresList.end(), [&](auto& PolyObject) {

            //your code...

            auto lock = std::lock_guard<std::mutex>{ mymutex };
            temp.push_back( result );
        });

        return temp;
    });
}

将Jython游标结果解析到表中

1 个答案: