如何使用递归 CTE 获取从 00 到 23 的时间?
How to get time from 00 to 23 using recursive CTE?
如何使用递归 CTE 获取一天中从 00 点到 23 点的小时数?
它给出了 00 到 24 小时,但我需要在我的结果集中排除 24 小时,或者换句话说,我只需要最多 00 到 23 小时
我的代码:
DECLARE @calenderDate DATETIME2(0) = '2019-05-16 05:00:00'
DECLARE @hr1Week int = 0
;with numcte AS
(
SELECT 0 [num]
UNION all
SELECT [num] + 1 FROM numcte WHERE [num] < (Select datediff(HOUR, @hr1Week, dateadd(DAY, 1, @hr1Week)))
)
select * from numcte
它给出了 00 到 24 小时,但我需要在我的结果集中排除 24 小时,或者换句话说,我只需要最多 00 到 23 小时
实际结果:
num
----
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
预期结果:
num
---
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
而不是
Select datediff(HOUR, @hr1Week, dateadd(DAY, 1, @hr1Week))
,改为
Select datediff(HOUR, @hr1Week, dateadd(DAY, 1, @hr1Week)) - 1
return 最多只能到 23 小时
DECLARE @calenderDate DATETIME2(0) = '2019-05-16 05:00:00'
DECLARE @hr1Week int = 0
;with numcte AS
(
SELECT 0 [num]
UNION all
SELECT [num] + 1 FROM numcte WHERE [num] <
(SEELCT datediff(HOUR, @hr1Week, dateadd(DAY, 1, @hr1Week)) -1)
)
SELECT * FROM numcte
如何使用递归 CTE 获取一天中从 00 点到 23 点的小时数?
它给出了 00 到 24 小时,但我需要在我的结果集中排除 24 小时,或者换句话说,我只需要最多 00 到 23 小时
我的代码:
DECLARE @calenderDate DATETIME2(0) = '2019-05-16 05:00:00'
DECLARE @hr1Week int = 0
;with numcte AS
(
SELECT 0 [num]
UNION all
SELECT [num] + 1 FROM numcte WHERE [num] < (Select datediff(HOUR, @hr1Week, dateadd(DAY, 1, @hr1Week)))
)
select * from numcte
它给出了 00 到 24 小时,但我需要在我的结果集中排除 24 小时,或者换句话说,我只需要最多 00 到 23 小时
实际结果:
num
----
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
预期结果:
num
---
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
而不是
Select datediff(HOUR, @hr1Week, dateadd(DAY, 1, @hr1Week))
,改为
Select datediff(HOUR, @hr1Week, dateadd(DAY, 1, @hr1Week)) - 1
return 最多只能到 23 小时
DECLARE @calenderDate DATETIME2(0) = '2019-05-16 05:00:00'
DECLARE @hr1Week int = 0
;with numcte AS
(
SELECT 0 [num]
UNION all
SELECT [num] + 1 FROM numcte WHERE [num] <
(SEELCT datediff(HOUR, @hr1Week, dateadd(DAY, 1, @hr1Week)) -1)
)
SELECT * FROM numcte