通过查询将百分比列添加到简单的 t-SQL 组

Question

我有这个简单的查询

select status,count(*) as [Count] from sms_deliverylog
where dt_log>'2015-03-23' and dt_log <'2015-03-24'
group by status with rollup

给出这个结果

status  Count
ACCEPTD 33
DELIVRD 554
EXPIRED 2
PENDING 72
REJECTD 1
UNDELIV 2
NULL    664

如何添加基于计数的简单百分比列。
如何将上面的 NULL 重命名为 "Total"

谢谢

编辑： 请问是否有不涉及使用 CTE

的简单 t-sql 替代方案

Answer 1

不能称之为简单，但这是我的尝试：

SELECT
  status,
  count,
  ((CONVERT(DECIMAL, count)/(SELECT COUNT(*) FROM sms_deliverylog WHERE dt_log>'2015-03-23' and dt_log <'2015-03-24'))) * 100 AS '%'
FROM
(
  SELECT
    CASE 
      WHEN status IS NULL THEN 'Total' 
      ELSE status 
    END AS [status],
    COUNT(*) AS [count]
  FROM 
    sms_deliverylog
  WHERE 
    dt_log>'2015-03-23' and dt_log <'2015-03-24'
  GROUP BY STATUS WITH ROLLUP
 ) AS statuscounts

提琴手 Link: http://sqlfiddle.com/#!6/5549f/8/0

通过查询将百分比列添加到简单的 t-SQL 组

Add a percentage column to a simple t-SQL group by query

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group-by