我有一行查询，可以在过去24小时内每小时单独获取红色，黄色，绿色和青色项目的总和。查询返回正确的结果。但是有可能简化它吗？提前谢谢。
Set statistics io on;
DECLARE @currentTimeInMs bigint = 398244649728; -- input parameter
DECLARE @oneHourInMs bigint = 3600000; -- 1 hour = 60 mins = 3600 secs = 3600000 msecs
DECLARE @h24 bigint = @currentTimeInMs
DECLARE @h00 bigint = @h24 - (@oneHourInMs * 24)
DECLARE @h01 bigint = @h24 - (@oneHourInMs * 23)
DECLARE @h02 bigint = @h24 - (@oneHourInMs * 22)
DECLARE @h03 bigint = @h24 - (@oneHourInMs * 21)
DECLARE @h04 bigint = @h24 - (@oneHourInMs * 20)
DECLARE @h05 bigint = @h24 - (@oneHourInMs * 19)
DECLARE @h06 bigint = @h24 - (@oneHourInMs * 18)
DECLARE @h07 bigint = @h24 - (@oneHourInMs * 17)
DECLARE @h08 bigint = @h24 - (@oneHourInMs * 16)
DECLARE @h09 bigint = @h24 - (@oneHourInMs * 15)
DECLARE @h10 bigint = @h24 - (@oneHourInMs * 14)
DECLARE @h11 bigint = @h24 - (@oneHourInMs * 13)
DECLARE @h12 bigint = @h24 - (@oneHourInMs * 12)
DECLARE @h13 bigint = @h24 - (@oneHourInMs * 11)
DECLARE @h14 bigint = @h24 - (@oneHourInMs * 10)
DECLARE @h15 bigint = @h24 - (@oneHourInMs * 9)
DECLARE @h16 bigint = @h24 - (@oneHourInMs * 8)
DECLARE @h17 bigint = @h24 - (@oneHourInMs * 7)
DECLARE @h18 bigint = @h24 - (@oneHourInMs * 6)
DECLARE @h19 bigint = @h24 - (@oneHourInMs * 5)
DECLARE @h20 bigint = @h24 - (@oneHourInMs * 4)
DECLARE @h21 bigint = @h24 - (@oneHourInMs * 3)
DECLARE @h22 bigint = @h24 - (@oneHourInMs * 2)
DECLARE @h23 bigint = @h24 - (@oneHourInMs * 1)
SELECT @currentTimeInMs AS CurrentTimeInMs,
-- H00
SUM(CASE
WHEN @h00 <= AnnounceStartTime AND AnnounceStartTime < @h01 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H00Red',
SUM(CASE
WHEN @h00 <= AnnounceStartTime AND AnnounceStartTime < @h01 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H00Yellow',
SUM(CASE
WHEN @h00 <= AnnounceStartTime AND AnnounceStartTime < @h01 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H00Green',
SUM(CASE
WHEN @h00 <= AnnounceStartTime AND AnnounceStartTime < @h01 AND Kind=1
THEN 1 ELSE 0
END) AS 'H00Cyan',
-- H01
SUM(CASE
WHEN @h01 <= AnnounceStartTime AND AnnounceStartTime < @h02 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H01Red',
SUM(CASE
WHEN @h01 <= AnnounceStartTime AND AnnounceStartTime < @h02 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H01Yellow',
SUM(CASE
WHEN @h01 <= AnnounceStartTime AND AnnounceStartTime < @h02 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H01Green',
SUM(CASE
WHEN @h01 <= AnnounceStartTime AND AnnounceStartTime < @h02 AND Kind=1
THEN 1 ELSE 0
END) AS 'H01Cyan',
-- H02
SUM(CASE
WHEN @h02 <= AnnounceStartTime AND AnnounceStartTime < @h03 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H02Red',
SUM(CASE
WHEN @h02 <= AnnounceStartTime AND AnnounceStartTime < @h03 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H02Yellow',
SUM(CASE
WHEN @h02 <= AnnounceStartTime AND AnnounceStartTime < @h03 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H02Green',
SUM(CASE
WHEN @h02 <= AnnounceStartTime AND AnnounceStartTime < @h03 AND Kind=1
THEN 1 ELSE 0
END) AS 'H02Cyan',
-- H03
SUM(CASE
WHEN @h03 <= AnnounceStartTime AND AnnounceStartTime < @h04 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H03Red',
SUM(CASE
WHEN @h03 <= AnnounceStartTime AND AnnounceStartTime < @h04 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H03Yellow',
SUM(CASE
WHEN @h03 <= AnnounceStartTime AND AnnounceStartTime < @h04 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H03Green',
SUM(CASE
WHEN @h03 <= AnnounceStartTime AND AnnounceStartTime < @h04 AND Kind=1
THEN 1 ELSE 0
END) AS 'H03Cyan',
-- H04
SUM(CASE
WHEN @h04 <= AnnounceStartTime AND AnnounceStartTime < @h05 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H04Red',
SUM(CASE
WHEN @h04 <= AnnounceStartTime AND AnnounceStartTime < @h05 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H04Yellow',
SUM(CASE
WHEN @h04 <= AnnounceStartTime AND AnnounceStartTime < @h05 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H04Green',
SUM(CASE
WHEN @h04 <= AnnounceStartTime AND AnnounceStartTime < @h05 AND Kind=1
THEN 1 ELSE 0
END) AS 'H04Cyan',
-- H05
SUM(CASE
WHEN @h05 <= AnnounceStartTime AND AnnounceStartTime < @h06 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H05Red',
SUM(CASE
WHEN @h05 <= AnnounceStartTime AND AnnounceStartTime < @h06 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H05Yellow',
SUM(CASE
WHEN @h05 <= AnnounceStartTime AND AnnounceStartTime < @h06 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H05Green',
SUM(CASE
WHEN @h05 <= AnnounceStartTime AND AnnounceStartTime < @h06 AND Kind=1
THEN 1 ELSE 0
END) AS 'H05Cyan',
-- H06
SUM(CASE
WHEN @h06 <= AnnounceStartTime AND AnnounceStartTime < @h07 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H06Red',
SUM(CASE
WHEN @h06 <= AnnounceStartTime AND AnnounceStartTime < @h07 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H06Yellow',
SUM(CASE
WHEN @h06 <= AnnounceStartTime AND AnnounceStartTime < @h07 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H06Green',
SUM(CASE
WHEN @h06 <= AnnounceStartTime AND AnnounceStartTime < @h07 AND Kind=1
THEN 1 ELSE 0
END) AS 'H06Cyan',
-- H07
SUM(CASE
WHEN @h07 <= AnnounceStartTime AND AnnounceStartTime < @h08 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H07Red',
SUM(CASE
WHEN @h07 <= AnnounceStartTime AND AnnounceStartTime < @h08 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H07Yellow',
SUM(CASE
WHEN @h07 <= AnnounceStartTime AND AnnounceStartTime < @h08 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H07Green',
SUM(CASE
WHEN @h07 <= AnnounceStartTime AND AnnounceStartTime < @h08 AND Kind=1
THEN 1 ELSE 0
END) AS 'H07Cyan',
-- H08
SUM(CASE
WHEN @h08 <= AnnounceStartTime AND AnnounceStartTime < @h09 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H08Red',
SUM(CASE
WHEN @h08 <= AnnounceStartTime AND AnnounceStartTime < @h09 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H08Yellow',
SUM(CASE
WHEN @h08 <= AnnounceStartTime AND AnnounceStartTime < @h09 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H08Green',
SUM(CASE
WHEN @h08 <= AnnounceStartTime AND AnnounceStartTime < @h09 AND Kind=1
THEN 1 ELSE 0
END) AS 'H08Cyan',
-- H09
SUM(CASE
WHEN @h09 <= AnnounceStartTime AND AnnounceStartTime < @h10 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H09Red',
SUM(CASE
WHEN @h09 <= AnnounceStartTime AND AnnounceStartTime < @h10 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H09Yellow',
SUM(CASE
WHEN @h09 <= AnnounceStartTime AND AnnounceStartTime < @h10 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H09Green',
SUM(CASE
WHEN @h09 <= AnnounceStartTime AND AnnounceStartTime < @h10 AND Kind=1
THEN 1 ELSE 0
END) AS 'H09Cyan',
-- H10
SUM(CASE
WHEN @h10 <= AnnounceStartTime AND AnnounceStartTime < @h11 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H10Red',
SUM(CASE
WHEN @h10 <= AnnounceStartTime AND AnnounceStartTime < @h11 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H10Yellow',
SUM(CASE
WHEN @h10 <= AnnounceStartTime AND AnnounceStartTime < @h11 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H10Green',
SUM(CASE
WHEN @h10 <= AnnounceStartTime AND AnnounceStartTime < @h11 AND Kind=1
THEN 1 ELSE 0
END) AS 'H10Cyan',
-- H11
SUM(CASE
WHEN @h11 <= AnnounceStartTime AND AnnounceStartTime < @h12 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H11Red',
SUM(CASE
WHEN @h11 <= AnnounceStartTime AND AnnounceStartTime < @h12 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H11Yellow',
SUM(CASE
WHEN @h11 <= AnnounceStartTime AND AnnounceStartTime < @h12 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H11Green',
SUM(CASE
WHEN @h11 <= AnnounceStartTime AND AnnounceStartTime < @h12 AND Kind=1
THEN 1 ELSE 0
END) AS 'H11Cyan',
-- H12
SUM(CASE
WHEN @h12 <= AnnounceStartTime AND AnnounceStartTime < @h13 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H12Red',
SUM(CASE
WHEN @h12 <= AnnounceStartTime AND AnnounceStartTime < @h13 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H12Yellow',
SUM(CASE
WHEN @h12 <= AnnounceStartTime AND AnnounceStartTime < @h13 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H12Green',
SUM(CASE
WHEN @h12 <= AnnounceStartTime AND AnnounceStartTime < @h13 AND Kind=1
THEN 1 ELSE 0
END) AS 'H12Cyan',
-- H13
SUM(CASE
WHEN @h13 <= AnnounceStartTime AND AnnounceStartTime < @h14 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H13Red',
SUM(CASE
WHEN @h13 <= AnnounceStartTime AND AnnounceStartTime < @h14 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H13Yellow',
SUM(CASE
WHEN @h13 <= AnnounceStartTime AND AnnounceStartTime < @h14 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H13Green',
SUM(CASE
WHEN @h13 <= AnnounceStartTime AND AnnounceStartTime < @h14 AND Kind=1
THEN 1 ELSE 0
END) AS 'H13Cyan',
-- H14
SUM(CASE
WHEN @h14 <= AnnounceStartTime AND AnnounceStartTime < @h15 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H14Red',
SUM(CASE
WHEN @h14 <= AnnounceStartTime AND AnnounceStartTime < @h15 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H14Yellow',
SUM(CASE
WHEN @h14 <= AnnounceStartTime AND AnnounceStartTime < @h15 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H14Green',
SUM(CASE
WHEN @h14 <= AnnounceStartTime AND AnnounceStartTime < @h15 AND Kind=1
THEN 1 ELSE 0
END) AS 'H14Cyan',
-- H15
SUM(CASE
WHEN @h15 <= AnnounceStartTime AND AnnounceStartTime < @h16 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H15Red',
SUM(CASE
WHEN @h15 <= AnnounceStartTime AND AnnounceStartTime < @h16 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H15Yellow',
SUM(CASE
WHEN @h15 <= AnnounceStartTime AND AnnounceStartTime < @h16 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H15Green',
SUM(CASE
WHEN @h15 <= AnnounceStartTime AND AnnounceStartTime < @h16 AND Kind=1
THEN 1 ELSE 0
END) AS 'H15Cyan',
-- H16
SUM(CASE
WHEN @h16 <= AnnounceStartTime AND AnnounceStartTime < @h17 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H16Red',
SUM(CASE
WHEN @h16 <= AnnounceStartTime AND AnnounceStartTime < @h17 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H16Yellow',
SUM(CASE
WHEN @h16 <= AnnounceStartTime AND AnnounceStartTime < @h17 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H16Green',
SUM(CASE
WHEN @h16 <= AnnounceStartTime AND AnnounceStartTime < @h17 AND Kind=1
THEN 1 ELSE 0
END) AS 'H16Cyan',
-- H17
SUM(CASE
WHEN @h17 <= AnnounceStartTime AND AnnounceStartTime < @h18 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H17Red',
SUM(CASE
WHEN @h17 <= AnnounceStartTime AND AnnounceStartTime < @h18 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H17Yellow',
SUM(CASE
WHEN @h17 <= AnnounceStartTime AND AnnounceStartTime < @h18 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H17Green',
SUM(CASE
WHEN @h17 <= AnnounceStartTime AND AnnounceStartTime < @h18 AND Kind=1
THEN 1 ELSE 0
END) AS 'H17Cyan',
-- H18
SUM(CASE
WHEN @h18 <= AnnounceStartTime AND AnnounceStartTime < @h19 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H18Red',
SUM(CASE
WHEN @h18 <= AnnounceStartTime AND AnnounceStartTime < @h19 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H18Yellow',
SUM(CASE
WHEN @h18 <= AnnounceStartTime AND AnnounceStartTime < @h19 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H18Green',
SUM(CASE
WHEN @h18 <= AnnounceStartTime AND AnnounceStartTime < @h19 AND Kind=1
THEN 1 ELSE 0
END) AS 'H18Cyan',
-- H19
SUM(CASE
WHEN @h19 <= AnnounceStartTime AND AnnounceStartTime < @h20 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H19Red',
SUM(CASE
WHEN @h19 <= AnnounceStartTime AND AnnounceStartTime < @h20 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H19Yellow',
SUM(CASE
WHEN @h19 <= AnnounceStartTime AND AnnounceStartTime < @h20 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H19Green',
SUM(CASE
WHEN @h19 <= AnnounceStartTime AND AnnounceStartTime < @h20 AND Kind=1
THEN 1 ELSE 0
END) AS 'H19Cyan',
-- H20
SUM(CASE
WHEN @h20 <= AnnounceStartTime AND AnnounceStartTime < @h21 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H20Red',
SUM(CASE
WHEN @h20 <= AnnounceStartTime AND AnnounceStartTime < @h21 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H20Yellow',
SUM(CASE
WHEN @h20 <= AnnounceStartTime AND AnnounceStartTime < @h21 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H20Green',
SUM(CASE
WHEN @h20 <= AnnounceStartTime AND AnnounceStartTime < @h21 AND Kind=1
THEN 1 ELSE 0
END) AS 'H20Cyan',
-- H21
SUM(CASE
WHEN @h21 <= AnnounceStartTime AND AnnounceStartTime < @h22 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H21Red',
SUM(CASE
WHEN @h21 <= AnnounceStartTime AND AnnounceStartTime < @h22 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H21Yellow',
SUM(CASE
WHEN @h21 <= AnnounceStartTime AND AnnounceStartTime < @h22 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H21Green',
SUM(CASE
WHEN @h21 <= AnnounceStartTime AND AnnounceStartTime < @h22 AND Kind=1
THEN 1 ELSE 0
END) AS 'H21Cyan',
-- H22
SUM(CASE
WHEN @h22 <= AnnounceStartTime AND AnnounceStartTime < @h23 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H22Red',
SUM(CASE
WHEN @h22 <= AnnounceStartTime AND AnnounceStartTime < @h23 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H22Yellow',
SUM(CASE
WHEN @h22 <= AnnounceStartTime AND AnnounceStartTime < @h23 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H22Green',
SUM(CASE
WHEN @h22 <= AnnounceStartTime AND AnnounceStartTime < @h23 AND Kind=1
THEN 1 ELSE 0
END) AS 'H22Cyan',
-- H23
SUM(CASE
WHEN @h23 <= AnnounceStartTime AND AnnounceStartTime < @h24 AND Kind=0 AND (Severity=0x400)
THEN 1 ELSE 0
END) AS 'H23Red',
SUM(CASE
WHEN @h23 <= AnnounceStartTime AND AnnounceStartTime < @h24 AND Kind=0 AND (Severity=0x200)
THEN 1 ELSE 0
END) AS 'H23Yellow',
SUM(CASE
WHEN @h23 <= AnnounceStartTime AND AnnounceStartTime < @h24 AND Kind=0 AND (Severity=0x100)
THEN 1 ELSE 0
END) AS 'H23Green',
SUM(CASE
WHEN @h23 <= AnnounceStartTime AND AnnounceStartTime < @h24 AND Kind=1
THEN 1 ELSE 0
END) AS 'H23Cyan'
FROM Alert A
WHERE A.AnnounceStartTime BETWEEN @h00 AND @h24
答案 0 :(得分：0)
这是一种可以简化它的方法。您可以为每个元素创建标记，然后将它们相乘：
select sum(isHH00*isRed) as HH00Red,
sum(isHH00*isYellow) as HH00Yellow,
. . .
from (select a.*,
(case when Kind=0 AND (Severity=0x400) then 1 else 0 end) as IsRed,
. . .
(case when @h00 <= AnnounceStartTime AND AnnounceStartTime < @h01
then 1 else 0
end) as isHH00,
. . .
from Alert a
) a
where . . .
您的另一种选择是通过执行以下操作对查询进行分组：
select datepart(hh, AnnounceStartTime), kind, Severity, count(*) as cnt
from Alert a
group by datepart(hh, AnnounceStartTime), kind, Severity
然后使用PIVOT语句或其他工具（如Excel）将其转换为您需要的数据。
答案 1 :(得分：0)
我首先要创建一个临时汇总表：
declare
@one_hour_in_ms int ,
@dtNow datetime ,
@@dtNowLess24Hours datetime
set @one_hour_in_ms = 60 * 60 * 1000
set @dtNow = current_timestamp -- current date and time
set @dtNowLess24Hours = dateadd(hour,-24,@dtNow)
create table #work
(
period_id int not null primary key clustered ,
red int not null ,
yellow int not null ,
green int not null ,
cyan int not null ,
)
insert #work ( period_id , red , yellow , green , cyan )
select period_id = datediff(ms,@startofPeriod,a.AnnounceStartTime) / @one_hour_in_ms , -- creates period id with the domain 0-23 indicating the hour offset within the reporting period
red = sum( case when a.Kind = 0 and a.Severity = 0x400 then 1 else 0 end ) ,
yellow = sum( case when a.Kind = 0 and a.Severity = 0x200 then 1 else 0 end ) ,
green = sum( case when a.Kind = 0 and a.Severity = 0x100 then 1 else 0 end ) ,
cyan = sum( case when a.Kind = 1 then 1 else 0 end )
from Alert a
where a.AnnounceStartTime >= @startOfPeriod
and a.AnnounceStartTime < @dtNow
group by datediff(ms,@startofPeriod,a.AnnounceStartTime) / @one_hour_in_ms
上面创建了一个临时表，最多24行，在24小时报告期内每小时一行。当然，如果没有记录该期间的数据，则不会生成任何行。
如果这就足够了，只需将其作为多行结果集返回，然后让客户端将行旋转为列。否则，您需要执行表旋转。一种不依赖于pivot的实现不可知的方法就是这样做：
select dtFrom = @dtNowLess24Hours ,
dtThru = @dtNow ,
H00_Red = sum( p00.red ) , H00_Yellow = sum( p00.yellow ) , H00_Green = sum( p00.green ) , H00_Cyan = sum( p00.cyan ) ,
H01_Red = sum( p01.red ) , H01_Yellow = sum( p01.yellow ) , H01_Green = sum( p01.green ) , H01_Cyan = sum( p01.cyan ) ,
...
H23_Red = sum( p23.red ) , H23_Yellow = sum( p23.yellow ) , H23_Green = sum( p23.green ) , H23_Cyan = sum( p23.cyan )
from ( select * from #work where period_id = 0 ) p00
cross join ( select * from #work where period_id = 1 ) p01
...
cross join ( select * from #work where period_id = 23 ) p23
如果您的系统支持pivot，则整个过程要简单得多。