将计数分组为重叠的类别

Question

我希望将计数分为（0 +，5 +，10 +，15 +等）类别

因此，具有7个潜在客户的代理商应计入0 +，5 +组，而不是10 +，15 +。

Postgres查询：

WITH agent_stats AS (
    SELECT agent_id, FLOOR(COUNT(*)/5) AS count_category
    FROM leads
    GROUP BY 1
)

SELECT count_category, COUNT(*)
FROM agent_stats
GROUP BY 1
ORDER BY 1

结果：

| count_category | count |
| 0              | 12    |
| 5              | 18    |
| 15             | 9     |
| 20             | 4     |

所需：

| count_category | count |
| 0              | 43    |
| 5              | 31    |
| 15             | 13    |
| 20             | 4     |

Answer 1

最简单的方法可能是累积总和：

WITH agent_stats AS (
    SELECT agent_id, FLOOR(COUNT(*)/5) AS count_category
    FROM leads
    GROUP BY 1
)
SELECT count_category, COUNT(*),
       SUM(COUNT(*)) OVER (ORDER BY count_category DESC)
FROM agent_stats
GROUP BY 1
ORDER BY 1;