創建每日報告

Question

查詢：

select 
    Sum(Case when fld_event_subject='Cold Call' THEN 1 ELSE 0 END) AS ColdCall, 
    Sum(Case when fld_event_subject='Referral Call' THEN 1 ELSE 0 END) As ReferalCall, 
    Sum(Case when fld_event_subject='Email Sent & Fax Sent' THEN 1 ELSE 0 END) As [Email Sent & Fax Sent] 
from 
    tbl_event 
where 
    (fld_event_created_on >= '12/15/2015 12:00:00 AM' 
    and fld_event_created_on <= '12/16/2015 3:53:04 AM') 

問題：

• 如何顯示時序列{我會從小時到小時}
• 如何下午5:30加入開始時間（從小時開始）？
• 如何在下午6:30結束小時（在小時內）？
• 如何自動增加表格中的小時數？

例如：

5:30PM to 6:30PM 
6:30PM to 7:30PM 
:: 
:: 
4:30AM to 5:30 AM 

Answer 1

我覺得我對你的解決方案。這不是最簡單的，但也允許不規則的時間跨度：

-- drop table CallLog 
create table CallLog 
(
    CallLogId INT, 
    Timestamp DATETIME2, 
    Subject VARCHAR(100), 
    OnlyTime AS CAST(Timestamp AS TIME) 
) 

-- drop table TimeInterval 
create table TimeInterval 
(
    TimeIntervalId INT, 
    StartTime TIME, 
    EndTime TIME, 
    -- to handle case when interval is split between days 
    CrossesMidnight BIT NOT NULL CONSTRAINT DF_TimeInterval_CrossesMidnight DEFAULT(0) 
) 

insert into TimeInterval values (1, '23:30', '00:30', 1) 
insert into TimeInterval values (1, '00:30', '01:30', 0) 
insert into TimeInterval values (1, '01:30', '02:30', 0) 
insert into TimeInterval values (1, '02:30', '20:30', 0) 
insert into TimeInterval values (1, '20:30', '21:30', 0) 
insert into TimeInterval values (1, '21:30', '22:30', 0) 
insert into TimeInterval values (1, '22:30', '23:30', 0) 
go 

select * from TimeInterval 

insert into CallLog values (1, '2015-01-01 10:00', 'Cold Call') 
insert into CallLog values (1, '2015-01-01 23:35', 'Cold Call') 
insert into CallLog values (1, '2015-01-02 00:01', 'Referral Call') 
insert into CallLog values (1, '2015-01-02 10:01', 'Referral Call') 
insert into CallLog values (1, '2015-01-02 21:35', 'Referral Call') 
select * from CallLog 

-- I did not find an universal formatting function to also work only on TIMEs 
alter function dbo.timeFormat(@time TIME) 
RETURNS VARCHAR(100) 
AS 
BEGIN 
    RETURN CAST(DATEPART(HOUR, @time) AS VARCHAR) + '.' + CAST(DATEPART(MINUTE, @time) AS VARCHAR) 
END 
GO 

-- join condition is very complex and might need rewriting for very large data (or maybe just get rid of that midnight interval :)) 
-- TODO: <= 23:59:59 skips events within the last second in day! 
;with cte as (
select 
    t.StartTime, t.EndTime, 
    Sum(Case when Subject='Cold Call' THEN 1 ELSE 0 END) AS ColdCall, 
    Sum(Case when Subject='Referral Call' THEN 1 ELSE 0 END) As ReferalCall 
from CallLog l 
    join TimeInterval t on 
     -- this would greatly simplify, if midnight is not inside the interval 
    (t.CrossesMidnight = 0 AND (l.OnlyTime > t.StartTime AND l.OnlyTime <= t.EndTime)) 
    OR 
    (t.CrossesMidnight = 1 AND (((l.OnlyTime > t.StartTime) AND l.OnlyTime <= '23:59:59') OR (l.OnlyTime < t.EndTime))) 
GROUP BY t.StartTime, t.EndTime) 
select dbo.timeFormat(cte.StartTime) + ' - ' + dbo.timeFormat(cte.EndTime), cte.ColdCall, cte.ReferalCall 
from cte 
go