Question

我有一个调用详细信息表，需要根据日期分组编译摘要查询。问题是单个呼叫ID可以有多行，如下所示。处置是1 =放弃，2 =处理。 RNA =无人接听。

Call ID | Disposition | Call Start       | Queue Name | Agent Name | RNA
010001    2             2014-12-03 13:02   Acme_Brick   Joe Schmoe   FALSE
010002    1             2014-12-03 13:36   Anvils_R_Us  Jane Doe     TRUE
010003    2             2014-12-03 14:22   Acme_Brick   Dan Post     TRUE
010003    2             2014-12-03 14:22   Acme_Brick   Joe Schmoe   FALSE

SET @reportdate = '2014-12-03';
SELECT `Queue Name`,
SUM(CASE WHEN Disposition = 2 THEN 1 ELSE 0 END) AS handled,
COUNT(DISTINCT `Call ID`) AS calls
FROM call_details
WHERE CAST(`Call Start` AS DATE) = @reportdate
GROUP BY `Queue Name`
ORDER BY `Queue Name` ASC;

所以，SUM(CASE WHEN Disposition = 2 THEN 1 ELSE 0 END) AS handled,导致了我的问题。下面的第一个表是我得到的。第二个是应该是什么。

Queue Name | Handled | Calls
Acme_Brick   3         2
Anvils_R_Us  0         1

Queue Name | Handled | Calls
Acme_Brick   2         2
Anvils_R_Us  0         1

我知道问题与“处置”字段中的CASE一致;我只是不确定是否必须创建一个中间摘要表，或者如果有一个复合分组，我可以完成，这将找出多行详细信息调用。事先感谢帮助;）。

Answer 1

使用条件COUNT（DISTINCT删除重复项：

SELECT `Queue Name`,
COUNT(DISTINCT CASE WHEN Disposition = 2 THEN `Call ID` END) AS handled,
COUNT(DISTINCT `Call ID`) AS calls
FROM call_details
WHERE CAST(`Call Start` AS DATE) = @reportdate
GROUP BY `Queue Name`
ORDER BY `Queue Name` ASC;

Answer 2

使用子查询去除重复项：

SELECT `Queue Name`, SUM(Disposition = 2) AS handled, COUNT(*) AS calls
FROM (
    SELECT `Queue Name`, `Call ID`, MAX(Disposition) AS Disposition
    FROM call_details
    WHERE CAST(`Call Start` AS Date) = @reportdate
    GROUP BY `Queue Name`, `Call ID`) AS subq
GROUP BY `Queue Name`
ORDER BY `Queue Name`

Answer 3

我想到，如果RNA是真的，那么就不应该计算处置。我将CASE语句更改为

SUM(CASE WHEN Disposition = 2 and RNA = 'FALSE' THEN 1 ELSE 0 END) AS handled,

得到了你想要的result。但这是基于您提供的有限数据集。它可能不成立，但取决于您的业务如何规定如何考虑未应答的呼叫。

嵌套分组MySQL查询

3 个答案: