满足条件时的SQL计数

Question

抱歉，这似乎是一个愚蠢的问题，但是我对SQL还不陌生，我正在运行ODBC并在Excel中使用超级查询。我希望例如将以下内容作为列（这是从AWS CTR中提取的）。队列来电到达日期提供的电话已接来电已接来电（在指定时间内）

我发现很难将已回答的呼叫作为一列，下面是我正在运行的当前语句，并且出现错误，如果删除“已回答的呼叫”语句，查询将按预期工作。任何对此的建议将不胜感激。

SELECT queue.name as "queue", cast(substring(connectedtosystemtimestamp,1,10) as date) as "call arrival date", count(contactid) as "Calls Offered", count(case when(cast(queue.duration as integer)<30) then 1 end) as "answered below 30 sec", SUM(CASE initiationmethod=’INBOUND’, name IS NOT NULL AND agent IS NOT NULL) AS "Calls answered"
FROM Catalog.db.table
WHERE initiationmethod = 'INBOUND' AND queue is not null
GROUP BY queue.name, cast(substring(connectedtosystemtimestamp,1,10) as date)

Answer 1

这是无效的SQL：

SUM(CASE initiationmethod=’INBOUND’, name IS NOT NULL AND agent IS NOT NULL) AS "Calls answered"

大概是您想要的：

SUM(CASE 
    WHEN initiationmethod = 'INBOUND' 
        AND name IS NOT NULL 
        AND agent IS NOT NULL 
    THEN 1 
    ELSE 0 
END) AS "Calls answered"