T-SQL Sum IIf查詢

Question

    SELECT t1.detail_Date AS clmDate
    ,t1.detail_agentID AS clmPID
    ,t3.HODCode AS clmHOD
    ,t1.detail_CallsHandled AS clmIBConnects
    ,t1.detail_TalkTime AS clmIBTalk
    ,t1.detail_WrapTime AS clmIBWrap
    ,t1.detail_HoldTime AS clmIBHold
    ,t1.detail_HandleTime AS clmIBTotal
    ,Sum(IIf([fldCallRoute.Value] = [Inbound],0)) AS clmIBConnects
--  ,Sum(IIf([fldCallRoute] = "Inbound", [clmTalk], 0)) AS IBTalk
--  ,Sum(IIf([fldCallRoute] = "Inbound", [clmWrap], 0)) AS IBWrap
--  ,Sum(IIf([fldCallRoute] = "Inbound", [clmTalk] + [clmWrap] + [clmHold], 0)) AS IBTotal
    ,Sum(0) AS clmOBSignedOn
    ,Sum(0) AS Preview
    ,Sum(0) AS OBTalk
    ,Sum(0) AS OBUpdate
    ,Sum(0) AS OBWork
    ,Sum(0) AS OBConnects
--  ,Sum(IIf([fldCallRoute] = "Inbound", [clmHold], 0)) AS IBHold
--  ,Sum(IIf([fldCallRoute] = "Outbound", [clmHold], 0)) AS OBHold}

我沒有得到sum（iif ..部分查詢，更具體地說： ,Sum(IIf([fldCallRoute] = "Inbound", [clmIBConnects], 0)) AS clmIBConnects

它顯示無效的列名稱“入站”嗎？無效的列名稱“ clmIBConnects”？

fldCallRoute列在表t2 ，該列具有條目Inbound，因此我不確定為什么它說列名稱為inbound？

Answer 1

您需要對字符串常量使用單引號：

Sum(IIf([fldCallRoute] = 'Inbound', [clmTalk], 0)) AS IBTalk,

我比iif()喜歡case 。 case是ANSI標准，幾乎在所有數據庫中都可用：

SUM(CASE WHEN fldCallRoute = 'Inbound' THEN clmTalk ELSE 0 END) as IBTalk,

Answer 2

您需要對字符串使用單引號' 。 “雙引號"表示一列，通常用於保留字：

,Sum(IIf([fldCallRoute] = 'Inbound', [clmIBConnects], 0)) AS clmIBConnects

您還有6列被評估為Sum(0) ，始終為0 .. Typo？