串联和定时2日期/时间字段一起

Question

我试图教我一些SQL，并且不能找出最佳的方式做以下

SELECT [BasicStartDateTime] 
    ,[BasicFinishTime] 
,cast (BasicStartDateTime as varchar(120)) + '-' + CAST(BasicFinishTime as varchar(7))as TimeBand 
FROM [DOCDPT].[main].[Tbl_WorkOrder] 
where BasicStartDateTime >'2017-01-01' 

这些都是我造成的列

BasicStartDateTime

2017-01-03 12:00:00.000 

BasicFinishTime

20:00:00.000 

TimeBand

Jan 3 2017 12:00PM-8:00PM 

理想我想最后一列（时间段）的说法12:00-20:00。

我试图去首先是12:00pm-8:00Pm，然后我会担心二十四小时制后位

我一直在尝试使用转换和权在第一阶段的级联，但语法似乎永远不会工作。

Answer 1

如果2012+

应该注意的是格式（）有一些伟大的功能，但它不知道作为一个演员。

例

Declare @YourTable Table ([BasicStartDateTime] datetime,[BasicFinishTime] datetime) 
Insert Into @YourTable Values 
('2017-01-03 12:00:00.000','2017-01-03 20:00:00.000') 

Select * 
     ,TimeBand = format(BasicStartDateTime,'HH:mm-')+format(BasicFinishTime,'HH:mm') 
From @YourTable 

返回

BasicStartDateTime  BasicFinishTime   TimeBand 
2017-01-03 12:00:00.000 2017-01-03 20:00:00.000 12:00-20:00 

Answer 2

试试这个：

LTRIM(RIGHT(CONVERT(VARCHAR(20), BasicStartDateTime, 100), 7)) + '-' + 
LTRIM(RIGHT(CONVERT(VARCHAR(20), cast(BasicFinishTime AS datetime), 100), 7)) 

Answer 3

使用convert()风格，并改变你basicfinishtime为datetime转换为varchar之前：

select 
    basicstartdatetime 
    , basicfinishtime 
    , timeband = convert(varchar(20), basicstartdatetime, 100) 
    +'-'+ltrim(right(convert(varchar(20), convert(datetime,basicfinishtime),100),7)) 
from tbl_workorder 

rextester演示：http://rextester.com/YDMCD58620

回报：

+---------------------+-----------------+----------------------------+ 
| basicstartdatetime | basicfinishtime |   timeband   | 
+---------------------+-----------------+----------------------------+ 
| 2017-01-03 12:00:00 | 20:00:00  | Jan 3 2017 12:00PM-8:00PM | 
+---------------------+-----------------+----------------------------+