Question

SELECT c.id_client, d.login, COUNT(*) AS calls
FROM voip.calls c, api.clients d WHERE c.id_client=d.id_client
AND c.call_start>='2013-10-28 00:00:00' AND c.call_start<'2013-11-11 00:00:00'
AND d.id_client IN 
(SELECT  e.idclient FROM voip.invoiceclients e WHERE e.clientnr='demo')
GROUP BY id_client;

为每个用户计算调用（id_client）：

id_client，登录，通话
369,10315,20 373,10319,3 389,10335,9 517,10460,1 519,10462,2 520,10463,2 540,10483,2

SELECT c.id_client, d.login, COUNT(*) AS calls_failed
FROM voip.callsfailed c, api.clients d WHERE c.id_client=d.id_client
AND c.call_start>='2013-10-28 00:00:00' AND c.call_start<'2013-11-11 00:00:00'
AND c.`IE_error_number`<>0
AND d.`id_client` IN
(SELECT  e.idclient FROM voip.invoiceclients e WHERE e.clientnr='demo')
GROUP BY id_client;

为每个用户计算失败调用（id_client）：

id_client，login，fail_calls
369,1000315,11
373,1000319,2 389,1000335,9 458,1000404,1 517,1000460,1 519,1000462,1 1 566,1000509,3 591,1000534,11

如何编写查询以在同一输出中为我提供呼叫和失败的呼叫：

id_client，login，calls，fail_calls
369,10315,20,11
373,10319,3,2 389,10335,9,9 517,10460,1,1 519,10462,2,1 520,10463,2,0 540,10483,2,0 566,0,3 591,10534,2131

Answer 1

两种方式：

UNION您现有查询的内容以及SUM结果：

SELECT id_client, login, 
    SUM(calls) AS calls, SUM(calls_failed) AS calls_failed
FROM
(
    SELECT c.id_client, d.login, COUNT(*) AS calls, 0 AS calls_failed
    FROM voip.calls c, api.clients d WHERE c.id_client=d.id_client
    AND c.call_start>='2013-10-28 00:00:00' AND c.call_start<'2013-11-11 00:00:00'
    AND d.id_client IN 
    (SELECT  e.idclient FROM voip.invoiceclients e WHERE e.clientnr='demo')
    GROUP BY id_client
    UNION ALL
    SELECT c.id_client, d.login, 0 AS calls, COUNT(*) AS calls_failed
    FROM voip.callsfailed c, api.clients d WHERE c.id_client=d.id_client
    AND c.call_start>='2013-10-28 00:00:00' AND c.call_start<'2013-11-11 00:00:00'
    AND c.`IE_error_number`<>0
    AND d.`id_client` IN
    (SELECT  e.idclient FROM voip.invoiceclients e WHERE e.clientnr='demo')
    GROUP BY id_client
) x
GROUP BY id_client, login

清理您的查询，拉出公共部分，然后得到：

SELECT d.id_client, d.login, 
    COALESCE(c.total, 0) AS calls, COALESCE(fc.total, 0) AS calls_failed
FROM api.clients d
LEFT OUTER JOIN
(
    SELECT COUNT(*) AS total, id_client
    FROM voip.calls c
    WHERE c.call_start >= '2013-10-28 00:00:00' 
    AND c.call_start < '2013-11-11 00:00:00'
    GROUP BY id_client
) c ON d.id_client = c.id_client
LEFT OUTER JOIN
(
    SELECT COUNT(*) AS total, id_client
    FROM voip.callsfailed c
    WHERE c.call_start >= '2013-10-28 00:00:00' 
    AND c.call_start < '2013-11-11 00:00:00'
    AND c.IE_error_number <> 0
    GROUP BY id_client
) fc ON d.id_client = fc.id_client   
WHERE d.id_client IN
(
    SELECT e.idclient
    FROM voip.invoiceclients e
    WHERE e.clientnr='demo'
)

从一个输出中的两个不同表中查询每个用户的调用统计信息

1 个答案: