select语句中的SQL增量列值 | select语句中的SQL增量列值

本文介绍了select语句中的SQL增量列值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在尝试编写 Select 语句，该语句将列的值增加50，但是范围可以最终是200,000，所以我不能在case语句中手动完成所有操作。

I'm trying to write a Select statement that increments a column value by 50, but the range can end up being 200,000 so I can't do it all in a case statement manually.

与此类似，但不是手动编写增量

Something similar to this, but instead of manually writing the increments

Select count(order_id) as order_count,
   case when revenue between 0 and 50 then ‘$50’
        when order_value between 51 and 100 then ‘$100’
             else ‘over $101’
   end as revenue_bucket
from Orders
group by 2

推荐答案

打开您的收入到存储桶值中，然后从中取出字符串：

Turn your revenue into the bucket value, then make string out of it:

SELECT count(order_id) AS order_count,
        '$' || ((((revenue - 0.01)/50)::int + 1) * 50)::text AS revenue_bucket
FROM Orders
GROUP BY 2;

显然，这远远超过了$ 200,000。

This obviously runs well past $200,000.

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