用 SQL 中的日期范围填补空白
Filling gaps with date ranges in SQL
我有一个事件 table，它有开始日期和结束日期列（事件不重叠），示例数据
if object_id('tempdb..#SourceTable') is not null
begin
drop table #SourceTable
end
create table #SourceTable
(
Id int identity(1,1) not null,
WindowRange varchar(15) not null,
StartDatetime datetime null,
EndDatetime datetime null
)
insert into #SourceTable
(
WindowRange,
StartDatetime,
EndDatetime
)
values
('04:20 - 05:36', '2015-08-31 04:20:01.890', '2015-08-31 05:36:14.290' ),
('00:20 - 01:24', '2015-08-31 00:20:01.487', '2015-08-31 01:24:52.983' ),
('20:20 - 21:27', '2015-08-30 20:20:01.177', '2015-08-30 21:27:53.317' ),
('16:20 - 17:28', '2015-08-30 16:20:01.133', '2015-08-30 17:28:24.173' ),
('12:20 - 13:30', '2015-08-30 12:20:01.273', '2015-08-30 13:30:38.370' )
示例输出
Id WindowRange StartDatetime EndDatetime
1 04:20 - 05:36 2015-08-31 04:20:01.890 2015-08-31 05:36:14.290
2 00:20 - 01:24 2015-08-31 00:20:01.487 2015-08-31 01:24:52.983
3 20:20 - 21:27 2015-08-30 20:20:01.177 2015-08-30 21:27:53.317
4 16:20 - 17:28 2015-08-30 16:20:01.133 2015-08-30 17:28:24.173
5 12:20 - 13:30 2015-08-30 12:20:01.273 2015-08-30 13:30:38.370
对于上面的示例，我想要额外的行来填充范围中的空白
预期输出
Id WindowRange StartDatetime EndDatetime
1 04:20 - 05:36 2015-08-31 04:20:01.890 2015-08-31 05:36:14.290
2 01:24 - 04:20 2015-08-31 01:24:52.983 2015-08-31 04:20:01.890
3 00:20 - 01:24 2015-08-31 00:20:01.487 2015-08-31 01:24:52.983
4 00:00 - 00:20 2015-08-31 00:00:00.000 2015-08-31 00:20:01.487
5 21:27 - 23:59 2015-08-30 21:27:53.317 2015-08-30 23:59:59.999
6 20:20 - 21:27 2015-08-30 20:20:01.177 2015-08-30 21:27:53.317
7 17:28 - 20:20 2015-08-30 17:28:24.173 2015-08-30 20:20:01.177
8 16:20 - 17:28 2015-08-30 16:20:01.133 2015-08-30 17:28:24.173
9 13:30 - 16:20 2015-08-30 13:30:38.370 2015-08-30 16:20:01.133
10 12:20 - 13:30 2015-08-30 12:20:01.273 2015-08-30 13:30:38.370
我试过使用带有 window 函数的通用 table 表达式，但似乎无法正确使用
;with myCTE as
(
select
row_number() over (order by EndDatetime desc) as SeqNo,
StartDatetime,
EndDatetime
from #SourceTable
)
select
t1.SeqNo as [T1SeqNo],
t2.SeqNo as [T2SeqNo],
t1.StartDatetime as [T1Start],
t1.EndDatetime as [T1End],
t2.StartDatetime as [T2Start],
t2.EndDatetime as [T2End]
from myCTE t1
left join myCTE t2
on t1.SeqNo = t2.SeqNo - 1
任何 suggestion/help 将不胜感激。
;with myCTE as
(
select
row_number() over (order by EndDatetime desc) as SeqNo,
StartDatetime,
EndDatetime
from #SourceTable
)
select ROW_NUMBER() over (order by T1Start DESC), *
from (
select
t1.StartDatetime as [T1Start],
t1.EndDatetime as [T1End]
from myCTE t1
UNION ALL
select
t1.EndDatetime as [T1Start],
t2.StartDatetime as [T1SEnd]
from myCTE t1
inner join myCTE t2
on t1.SeqNo = t2.SeqNo + 1
) as t
order by T1Start DESC
DECLARE @WindowRange varchar(15),
@StartDatetime datetime,
@EndDatetime datetime,
@StartDate date,
@EndDate date,
@NextStartDatetime datetime,
@NextEndDatetime datetime
DECLARE yourCursor CURSOR FORWARD_ONLY READ_ONLY FOR
SELECT StartDatetime, EndDatetime FROM #SourceTable order by StartDatetime
OPEN yourCursor
FETCH NEXT FROM yourCursor INTO @StartDatetime, @EndDatetime
IF @@FETCH_STATUS = 0
BEGIN
FETCH NEXT FROM yourCursor INTO @NextStartDatetime, @NextEndDatetime
WHILE @@FETCH_STATUS = 0
BEGIN
SET @StartDate = @StartDatetime
SET @EndDate = @EndDatetime
IF @EndDate > @StartDate
BEGIN
SET @WindowRange = LEFT(CONVERT(varchar, @StartDatetime, 108), 5) + ' - ' + LEFT(CONVERT(varchar, @EndDate, 108), 5)
INSERT INTO #SourceTable (WindowRange, StartDatetime, EndDatetime) VALUES (@WindowRange, @StartDatetime, @EndDate)
SET @WindowRange = LEFT(CONVERT(varchar, @StartDatetime, 108), 5) + ' - ' + LEFT(CONVERT(varchar, @EndDate, 108), 5)
INSERT INTO #SourceTable (WindowRange, StartDatetime, EndDatetime) VALUES (@WindowRange, @EndDate, @EndDatetime)
END
SET @StartDate = @EndDatetime
SET @EndDate = @NextStartDatetime
IF @EndDate > @StartDate
BEGIN
SET @WindowRange = LEFT(CONVERT(varchar, @EndDatetime, 108), 5) + ' - ' + '00:00' --@StartDate
INSERT INTO #SourceTable (WindowRange, StartDatetime, EndDatetime) VALUES (@WindowRange, @EndDatetime, @StartDate)
SET @WindowRange = '00:00' + ' - ' + LEFT(CONVERT(varchar, @NextStartDatetime, 108), 5) --@EndDate
INSERT INTO #SourceTable (WindowRange, StartDatetime, EndDatetime) VALUES (@WindowRange, @EndDate, @NextStartDatetime)
END
SET @WindowRange = LEFT(CONVERT(varchar, @EndDatetime, 108), 5) + ' - ' + LEFT(CONVERT(varchar, @NextStartDatetime, 108), 5)
INSERT INTO #SourceTable (WindowRange, StartDatetime, EndDatetime) VALUES (@WindowRange, @EndDatetime, @NextStartDatetime)
SET @StartDatetime = @NextStartDatetime
SET @EndDatetime = @NextEndDatetime
FETCH NEXT FROM yourCursor INTO @NextStartDatetime, @NextEndDatetime
END
END
CLOSE yourCursor;
DEALLOCATE yourCursor;
select * from #SourceTable order by StartDatetime
我制作了一个 SQL 服务器游标代码，几乎接近您的预期结果。这里的不同之处在于您期望“2015-08-30 23:59:59.999”的第 5 条记录，但在 SQL 服务器中将读取“2015-08-30 23:59:59.999”作为“2015-09-01 00:00:00.000”。希望这有帮助
DECLARE @temp TABLE(
Id int identity(1,1) not null,
WindowRange varchar(15) not null,
StartDatetime datetime null,
EndDatetime datetime null
)
INSERT INTO @temp
SELECT TOP 1 WindowRange, StartDatetime, EndDatetime
FROM #SourceTable ORDER BY StartDateTime
DECLARE @curStartDateTime DATETIME
DECLARE @curEndDateTime DATETIME
DECLARE @prevStartDateTime DATETIME
DECLARE @prevEndDateTime DATETIME
DECLARE @iteration INT
SET @iteration = 0
DECLARE @timeRange CURSOR
SET @timeRange = CURSOR FOR
SELECT StartDatetime, EndDatetime FROM #SourceTable ORDER BY StartDateTime
OPEN @timeRange
FETCH NEXT FROM @timeRange INTO @curStartDateTime, @curEndDateTime
WHILE @@FETCH_STATUS = 0
BEGIN
IF @iteration <> 0
BEGIN
IF CONVERT(VARCHAR(8), @curStartDateTime, 112) = CONVERT(VARCHAR(8), @prevEndDateTime, 112)
BEGIN
IF CONVERT(VARCHAR(23), @curStartDateTime, 121) <> CONVERT(VARCHAR(23), @prevEndDateTime, 121)
BEGIN
INSERT INTO @temp
SELECT
CONVERT(VARCHAR(5), @prevEndDateTime, 108) + ' - ' + CONVERT(VARCHAR(5), @curStartDateTime, 108)
, @prevEndDateTime
, @curStartDateTime
END
END
ELSE
BEGIN
INSERT INTO @temp
SELECT
CONVERT(VARCHAR(5), @prevEndDateTime, 108) + ' - 23:59'
, @prevEndDateTime
, CONVERT(VARCHAR(8), @curStartDateTime, 112) + ' 23:59:59.999'
INSERT INTO @temp
SELECT
'00:00 - ' + CONVERT(VARCHAR(5), @curStartDateTime, 108)
, CONVERT(VARCHAR(8), DATEADD(day, 1, @prevEndDateTime), 112) + ' 00:00:00.000'
, @curStartDateTime
END
INSERT INTO @temp
SELECT
CONVERT(VARCHAR(5), @curStartDateTime, 108) + ' - ' + CONVERT(VARCHAR(5), @curEndDateTime, 108)
, @curStartDateTime
, @curEndDateTime
END
SET @prevStartDateTime = @curStartDateTime
SET @prevEndDateTime = @curEndDateTime
SET @iteration = @iteration + 1
FETCH NEXT FROM @timeRange INTO @curStartDateTime, @curEndDateTime
END
CLOSE @timeRange
DEALLOCATE @timeRange
SELECT * FROM @temp ORDER BY StartDatetime DESC
我有一个事件 table，它有开始日期和结束日期列（事件不重叠），示例数据
if object_id('tempdb..#SourceTable') is not null
begin
drop table #SourceTable
end
create table #SourceTable
(
Id int identity(1,1) not null,
WindowRange varchar(15) not null,
StartDatetime datetime null,
EndDatetime datetime null
)
insert into #SourceTable
(
WindowRange,
StartDatetime,
EndDatetime
)
values
('04:20 - 05:36', '2015-08-31 04:20:01.890', '2015-08-31 05:36:14.290' ),
('00:20 - 01:24', '2015-08-31 00:20:01.487', '2015-08-31 01:24:52.983' ),
('20:20 - 21:27', '2015-08-30 20:20:01.177', '2015-08-30 21:27:53.317' ),
('16:20 - 17:28', '2015-08-30 16:20:01.133', '2015-08-30 17:28:24.173' ),
('12:20 - 13:30', '2015-08-30 12:20:01.273', '2015-08-30 13:30:38.370' )
示例输出
Id WindowRange StartDatetime EndDatetime
1 04:20 - 05:36 2015-08-31 04:20:01.890 2015-08-31 05:36:14.290
2 00:20 - 01:24 2015-08-31 00:20:01.487 2015-08-31 01:24:52.983
3 20:20 - 21:27 2015-08-30 20:20:01.177 2015-08-30 21:27:53.317
4 16:20 - 17:28 2015-08-30 16:20:01.133 2015-08-30 17:28:24.173
5 12:20 - 13:30 2015-08-30 12:20:01.273 2015-08-30 13:30:38.370
对于上面的示例，我想要额外的行来填充范围中的空白
预期输出
Id WindowRange StartDatetime EndDatetime
1 04:20 - 05:36 2015-08-31 04:20:01.890 2015-08-31 05:36:14.290
2 01:24 - 04:20 2015-08-31 01:24:52.983 2015-08-31 04:20:01.890
3 00:20 - 01:24 2015-08-31 00:20:01.487 2015-08-31 01:24:52.983
4 00:00 - 00:20 2015-08-31 00:00:00.000 2015-08-31 00:20:01.487
5 21:27 - 23:59 2015-08-30 21:27:53.317 2015-08-30 23:59:59.999
6 20:20 - 21:27 2015-08-30 20:20:01.177 2015-08-30 21:27:53.317
7 17:28 - 20:20 2015-08-30 17:28:24.173 2015-08-30 20:20:01.177
8 16:20 - 17:28 2015-08-30 16:20:01.133 2015-08-30 17:28:24.173
9 13:30 - 16:20 2015-08-30 13:30:38.370 2015-08-30 16:20:01.133
10 12:20 - 13:30 2015-08-30 12:20:01.273 2015-08-30 13:30:38.370
我试过使用带有 window 函数的通用 table 表达式，但似乎无法正确使用
;with myCTE as
(
select
row_number() over (order by EndDatetime desc) as SeqNo,
StartDatetime,
EndDatetime
from #SourceTable
)
select
t1.SeqNo as [T1SeqNo],
t2.SeqNo as [T2SeqNo],
t1.StartDatetime as [T1Start],
t1.EndDatetime as [T1End],
t2.StartDatetime as [T2Start],
t2.EndDatetime as [T2End]
from myCTE t1
left join myCTE t2
on t1.SeqNo = t2.SeqNo - 1
任何 suggestion/help 将不胜感激。
;with myCTE as
(
select
row_number() over (order by EndDatetime desc) as SeqNo,
StartDatetime,
EndDatetime
from #SourceTable
)
select ROW_NUMBER() over (order by T1Start DESC), *
from (
select
t1.StartDatetime as [T1Start],
t1.EndDatetime as [T1End]
from myCTE t1
UNION ALL
select
t1.EndDatetime as [T1Start],
t2.StartDatetime as [T1SEnd]
from myCTE t1
inner join myCTE t2
on t1.SeqNo = t2.SeqNo + 1
) as t
order by T1Start DESC
DECLARE @WindowRange varchar(15),
@StartDatetime datetime,
@EndDatetime datetime,
@StartDate date,
@EndDate date,
@NextStartDatetime datetime,
@NextEndDatetime datetime
DECLARE yourCursor CURSOR FORWARD_ONLY READ_ONLY FOR
SELECT StartDatetime, EndDatetime FROM #SourceTable order by StartDatetime
OPEN yourCursor
FETCH NEXT FROM yourCursor INTO @StartDatetime, @EndDatetime
IF @@FETCH_STATUS = 0
BEGIN
FETCH NEXT FROM yourCursor INTO @NextStartDatetime, @NextEndDatetime
WHILE @@FETCH_STATUS = 0
BEGIN
SET @StartDate = @StartDatetime
SET @EndDate = @EndDatetime
IF @EndDate > @StartDate
BEGIN
SET @WindowRange = LEFT(CONVERT(varchar, @StartDatetime, 108), 5) + ' - ' + LEFT(CONVERT(varchar, @EndDate, 108), 5)
INSERT INTO #SourceTable (WindowRange, StartDatetime, EndDatetime) VALUES (@WindowRange, @StartDatetime, @EndDate)
SET @WindowRange = LEFT(CONVERT(varchar, @StartDatetime, 108), 5) + ' - ' + LEFT(CONVERT(varchar, @EndDate, 108), 5)
INSERT INTO #SourceTable (WindowRange, StartDatetime, EndDatetime) VALUES (@WindowRange, @EndDate, @EndDatetime)
END
SET @StartDate = @EndDatetime
SET @EndDate = @NextStartDatetime
IF @EndDate > @StartDate
BEGIN
SET @WindowRange = LEFT(CONVERT(varchar, @EndDatetime, 108), 5) + ' - ' + '00:00' --@StartDate
INSERT INTO #SourceTable (WindowRange, StartDatetime, EndDatetime) VALUES (@WindowRange, @EndDatetime, @StartDate)
SET @WindowRange = '00:00' + ' - ' + LEFT(CONVERT(varchar, @NextStartDatetime, 108), 5) --@EndDate
INSERT INTO #SourceTable (WindowRange, StartDatetime, EndDatetime) VALUES (@WindowRange, @EndDate, @NextStartDatetime)
END
SET @WindowRange = LEFT(CONVERT(varchar, @EndDatetime, 108), 5) + ' - ' + LEFT(CONVERT(varchar, @NextStartDatetime, 108), 5)
INSERT INTO #SourceTable (WindowRange, StartDatetime, EndDatetime) VALUES (@WindowRange, @EndDatetime, @NextStartDatetime)
SET @StartDatetime = @NextStartDatetime
SET @EndDatetime = @NextEndDatetime
FETCH NEXT FROM yourCursor INTO @NextStartDatetime, @NextEndDatetime
END
END
CLOSE yourCursor;
DEALLOCATE yourCursor;
select * from #SourceTable order by StartDatetime
我制作了一个 SQL 服务器游标代码，几乎接近您的预期结果。这里的不同之处在于您期望“2015-08-30 23:59:59.999”的第 5 条记录，但在 SQL 服务器中将读取“2015-08-30 23:59:59.999”作为“2015-09-01 00:00:00.000”。希望这有帮助
DECLARE @temp TABLE(
Id int identity(1,1) not null,
WindowRange varchar(15) not null,
StartDatetime datetime null,
EndDatetime datetime null
)
INSERT INTO @temp
SELECT TOP 1 WindowRange, StartDatetime, EndDatetime
FROM #SourceTable ORDER BY StartDateTime
DECLARE @curStartDateTime DATETIME
DECLARE @curEndDateTime DATETIME
DECLARE @prevStartDateTime DATETIME
DECLARE @prevEndDateTime DATETIME
DECLARE @iteration INT
SET @iteration = 0
DECLARE @timeRange CURSOR
SET @timeRange = CURSOR FOR
SELECT StartDatetime, EndDatetime FROM #SourceTable ORDER BY StartDateTime
OPEN @timeRange
FETCH NEXT FROM @timeRange INTO @curStartDateTime, @curEndDateTime
WHILE @@FETCH_STATUS = 0
BEGIN
IF @iteration <> 0
BEGIN
IF CONVERT(VARCHAR(8), @curStartDateTime, 112) = CONVERT(VARCHAR(8), @prevEndDateTime, 112)
BEGIN
IF CONVERT(VARCHAR(23), @curStartDateTime, 121) <> CONVERT(VARCHAR(23), @prevEndDateTime, 121)
BEGIN
INSERT INTO @temp
SELECT
CONVERT(VARCHAR(5), @prevEndDateTime, 108) + ' - ' + CONVERT(VARCHAR(5), @curStartDateTime, 108)
, @prevEndDateTime
, @curStartDateTime
END
END
ELSE
BEGIN
INSERT INTO @temp
SELECT
CONVERT(VARCHAR(5), @prevEndDateTime, 108) + ' - 23:59'
, @prevEndDateTime
, CONVERT(VARCHAR(8), @curStartDateTime, 112) + ' 23:59:59.999'
INSERT INTO @temp
SELECT
'00:00 - ' + CONVERT(VARCHAR(5), @curStartDateTime, 108)
, CONVERT(VARCHAR(8), DATEADD(day, 1, @prevEndDateTime), 112) + ' 00:00:00.000'
, @curStartDateTime
END
INSERT INTO @temp
SELECT
CONVERT(VARCHAR(5), @curStartDateTime, 108) + ' - ' + CONVERT(VARCHAR(5), @curEndDateTime, 108)
, @curStartDateTime
, @curEndDateTime
END
SET @prevStartDateTime = @curStartDateTime
SET @prevEndDateTime = @curEndDateTime
SET @iteration = @iteration + 1
FETCH NEXT FROM @timeRange INTO @curStartDateTime, @curEndDateTime
END
CLOSE @timeRange
DEALLOCATE @timeRange
SELECT * FROM @temp ORDER BY StartDatetime DESC