SQL 服务器 - 在 case 语句中组合日期字段、文字字符和 DATEADD 值

Question

我已经创建了一个 case 语句来按此顺序工作。

确定它是否是“优先级升级”、“准备取件”、“等待路由”，否则是一个日期范围。

如果我排除 case 语句的 ELSE 部分，则上述方法有效。如果 none 其他情况为真，那么我需要我的 else 语句来生成装运日期加上装运日期加上 2 天，以给出包裹装运的日期范围。即 02/15/2016 – 02/17/2016

Select
    Case 
        When datediff (day, sl.[Shipment Date], sl.[Priority Escalation Date]) < 0 then  'Priority Escalation'
        When sh.[On Hold] = 'RFP' then 'Ready for Pickup'
        When sh.[On Hold] = 'WFR' then 'Waiting for Routing'
        Else sl.[Shipment date] + “ – “ + & DateAdd("d", 2, sl.[Shipment Date]) 
    End as 'Expected Value'

数据应该是这样的

Expected Value
02/24/2016 - 02/26/2016
02/24/2016 - 02/26/2016
02/24/2016 - 02/26/2016
02/24/2016 - 02/26/2016
Waiting for Routing
Waiting for Routing
Priority Escalation
Ready for Pickup
Ready for Pickup
Priority Escalation
Priority Escalation
Priority Escalation
Ready for Pickup

Answer 1

您可能运行遇到转换错误。要解决此问题，您需要 CONVERT 您的日期 VARCHAR:

SELECT
    CASE 
        WHEN DATEDIFF (DAY, sl.[Shipment Date], sl.[Priority Escalation Date]) < 0 THEN  'Priority Escalation'
        WHEN sh.[On Hold] = 'RFP' THEN 'Ready for Pickup'
        WHEN sh.[On Hold] = 'WFR' THEN 'Waiting for Routing'
        ELSE CONVERT(VARCHAR(10), sl.[Shipment date], 101) + ' - ' 
                + CONVERT(VARCHAR(10), DATEADD(DAY, 2, sl.[Shipment Date]), 101) 
    END AS 'Expected Value'

SQL 服务器 - 在 case 语句中组合日期字段、文字字符和 DATEADD 值

SQL Server - Combining a date field, a literal character and a DATEADD value in a case statment

sql

sql-server

syntax

dateadd