获取问题开放的平均天数

Question

我有一个表格，其中包含我转换的“通话开放日期”列 (actual_log_date)，使用

convert(char(10), actual_log_date, 103) 'Call Logged'

例如显示 2012 年 1 月 2 日登录的通话。

还有一个关闭时间列 (close_time)，我对其运行相同的转换，

convert(char(10), close_time, 103) 'Call Closed' 

显示 2012 年 12 月 2 日结束的通话。

现在，我需要生成一个脚本来获取电话已打开的平均天数。我可以跑

(select datediff(dd, c.actual_log_date, c.close_time)) as 'Days Open' 

要创建显示通话已开放 12 天或其他任何时间的列，但现在需要计算所有记录并在结果结束时获得平均总和，这就是我卡住的地方！

我忘了说我不能创建临时表，因为我只有只读权限。

抱歉，我是新来的，所以不确定协议，但如果看到我正在使用的内容更容易回答，这里是脚本；

select 

convert(char(10),actual_log_date,103) 'Call Logged',
call_number 'Call #', 
short_problem 'Issue Description',
Customer = (select surname + ', ' + first_name from i.ar_user_attributes where ref = user_ref ),
Officer  = (select surname + ', ' + first_name from i.su_help_centre where ref = resolve_officer),
Department = (select name from i.su_support_group where ref = resolve_group),
convert(char(10),close_time,103) 'Closed',
(select datediff(hh,c.actual_log_date,c.close_time)) as 'Hours Open',
(select datediff(dd,c.actual_log_date,c.close_time)) as 'Days Open'

from 
i.cl_call_logging c

where 
c.resolve_time between
convert(datetime,convert(varchar,month(dateadd(m,-1,getdate()))) + '/01/' + convert(varchar,year(dateadd(m,-1,getdate())))) and
convert(datetime,convert(varchar,month(getdate())) + '/01/' + convert(varchar,year(getdate())))
and c.resolve_group in ('48', '60')

再次感谢！

Answer 1

您可以使用 with 查询，如下所示：

insert into @temp (CallOpen, CallClosed)
values
('2012-01-02', '2012-02-12'),
('2012-01-05', '2012-02-12'),
('2012-01-07', '2012-02-05'),
('2012-01-14', '2012-02-03'),
('2012-02-10', '2012-03-15')

;with T1 as 
(
select
    CallOpen,
    CallClosed,
    DATEDIFF(dd, callopen, callclosed) as DaysOpen
from @temp
)

select AVG(daysopen) from T1

使用你的完整脚本，试试这个：

;with T1 as
(
select 
    convert(char(10),actual_log_date,103) 'Call Logged',
    call_number 'Call #', 
    short_problem 'Issue Description',
    Customer = (select surname + ', ' + first_name from i.ar_user_attributes where ref = user_ref ),
    Officer  = (select surname + ', ' + first_name from i.su_help_centre where ref = resolve_officer),
    Department = (select name from i.su_support_group where ref = resolve_group),
    convert(char(10),close_time,103) 'Closed',
    (select datediff(hh,c.actual_log_date,c.close_time)) as 'Hours Open',
    (select datediff(dd,c.actual_log_date,c.close_time)) as 'Days Open'
from @cl_call_logging c
where 
    c.resolve_time between
        convert(datetime,convert(varchar,month(dateadd(m,-1,getdate()))) + '/01/' + convert(varchar,year(dateadd(m,-1,getdate())))) and
        convert(datetime,convert(varchar,month(getdate())) + '/01/' + convert(varchar,year(getdate())))
    and c.resolve_group in ('48', '60')
)

select AVG([Days Open]) from T1