查询以获取开始和结束夜间时间之间的日志

Question

查询以获取开始和结束夜间时间之间的日志

Daw*_*wan 3 sql-server sql-server-2014

我正在处理我们通过夜间开始时间和夜间结束时间的程序，我需要在这些时间之间获取日志。

所以：

如果是StartHour = 18and EndHour = 5，存储过程应该返回6:00 PM和之间的所有日志5:00 AM。
如果是StartHour = 1and EndHour = 5，存储过程应该返回1:00 AM和之间的所有日志5:00 AM。

我尝试创建 SQL Fiddle，但在今天的 SQL Server 2014 或 SQL Server 2008 中创建小提琴似乎存在问题。

我正在使用 SQL SERVER 2014 - 但 Fiddle 在 MySQL 中

（我在 MySQL 中创建了一个来显示数据）[错误的小提琴：http ://sqlfiddle.com/#!9/6f0a6/1 ]

正确：http ://sqlfiddle.com/#!9/ 6467d8/3

这是我的脚本的样子：

Select 
    * 
FROM
(

    Select 
        iVehicleMonitoringId,
        dtUtcDateTime,
        HourPart = DATEPART(HOUR, dtUtcDateTime)
        From VehicleMonitoringLog vm

        Where vm.dtUTCDateTime > @utcStartDate AND vm.dtUTCDateTime < @utcEndDate
        AND  DATEPART(HOUR, vm.dtUtcDateTime) >  @iStartHour

UNION
    Select 
        vm.iVehicleMonitoringId,
        dtUtcDateTime,
        HourPart = DATEPART(HOUR, dtUtcDateTime)
        From VehicleMonitoringLog vm

        Where vm.dtUTCDateTime > @utcStartDate AND vm.dtUTCDateTime < @utcEndDate
        AND  DATEPART(HOUR, vm.dtUtcDateTime) <  @iEndHour
) As G
Order by dtUtcDateTime

Run Code Online (Sandbox Code Playgroud)

但是这个查询对于第二个条件是错误的。因为 18,19,20.... 都大于 1，所以我对如何编写这个查询感到困惑。

Answer 1

Pau*_*ite 6

样本数据

CREATE TABLE dbo.MyLogs
    (dtUtcDateTime datetime, HourPart int);

CREATE CLUSTERED INDEX cx 
ON dbo.MyLogs (HourPart, dtUtcDateTime);

INSERT INTO MyLogs
    (dtUtcDateTime, HourPart)
VALUES
    ('2015-07-31 19:00:06', 19),
    ('2015-07-31 19:00:07', 19),
    ('2015-07-31 19:01:27', 19),
    ('2015-07-31 19:01:29', 19),
    ('2015-07-31 19:01:50', 19),
    ('2015-07-31 19:04:17', 19),
    ('2015-07-31 19:04:42', 19),
    ('2015-07-31 19:27:48', 19),
    ('2015-07-31 19:48:17', 19),
    ('2015-07-31 20:04:43', 20),
    ('2015-08-01 01:55:11', 1),
    ('2015-08-01 01:55:13', 1),
    ('2015-08-01 01:55:21', 1),
    ('2015-08-01 01:55:23', 1),
    ('2015-08-01 01:55:25', 1),
    ('2015-08-01 01:55:29', 1),
    ('2015-08-01 01:55:42', 1),
    ('2015-08-01 01:55:44', 1),
    ('2015-08-01 01:55:45', 1),
    ('2015-08-01 01:56:26', 1),
    ('2015-08-01 01:56:27', 1),
    ('2015-08-01 01:56:31', 1),
    ('2015-08-01 01:56:32', 1),
    ('2015-08-01 02:06:32', 2),
    ('2015-08-01 02:10:49', 2),
    ('2015-08-01 02:14:36', 2),
    ('2015-08-01 02:15:01', 2),
    ('2015-08-01 02:15:10', 2),
    ('2015-08-01 02:15:11', 2),
    ('2015-08-01 02:15:16', 2),
    ('2015-08-01 02:15:20', 2),
    ('2015-08-01 03:11:40', 3),
    ('2015-08-01 03:11:38', 3),
    ('2015-08-01 03:14:07', 3),
    ('2015-08-01 03:14:20', 3),
    ('2015-08-01 03:14:12', 3),
    ('2015-08-01 03:14:17', 3),
    ('2015-08-01 03:14:51', 3),
    ('2015-08-01 03:15:04', 3),
    ('2015-08-01 03:15:06', 3),
    ('2015-08-01 03:15:10', 3),
    ('2015-08-01 03:15:11', 3),
    ('2015-08-01 03:15:16', 3),
    ('2015-08-01 03:15:24', 3),
    ('2015-08-01 03:15:25', 3),
    ('2015-08-01 03:15:29', 3),
    ('2015-08-01 03:15:41', 3),
    ('2015-08-01 03:15:43', 3),
    ('2015-08-01 03:17:24', 3),
    ('2015-08-01 03:17:25', 3),
    ('2015-08-01 03:17:28', 3),
    ('2015-08-01 03:17:49', 3),
    ('2015-08-01 03:17:45', 3),
    ('2015-08-01 03:19:30', 3),
    ('2015-08-01 03:20:03', 3),
    ('2015-08-01 03:22:12', 3),
    ('2015-08-01 03:23:13', 3),
    ('2015-08-01 03:23:16', 3),
    ('2015-08-01 03:24:46', 3),
    ('2015-08-01 03:26:36', 3),
    ('2015-08-01 03:26:35', 3),
    ('2015-08-01 03:26:49', 3),
    ('2015-08-01 03:26:52', 3),
    ('2015-08-01 03:26:57', 3),
    ('2015-08-01 03:27:14', 3),
    ('2015-08-01 03:27:15', 3),
    ('2015-08-01 03:27:31', 3),
    ('2015-08-01 03:27:30', 3),
    ('2015-08-01 03:28:04', 3),
    ('2015-08-01 03:29:16', 3),
    ('2015-08-01 03:29:32', 3),
    ('2015-08-01 03:29:30', 3),
    ('2015-08-01 03:29:43', 3),
    ('2015-08-01 03:29:56', 3),
    ('2015-08-01 03:30:06', 3),
    ('2015-08-01 03:30:25', 3),
    ('2015-08-01 03:30:26', 3),
    ('2015-08-01 03:30:27', 3),
    ('2015-08-01 03:32:21', 3),
    ('2015-08-01 03:34:07', 3),
    ('2015-08-01 03:35:01', 3),
    ('2015-08-01 03:35:02', 3),
    ('2015-08-01 03:35:04', 3),
    ('2015-08-01 03:35:41', 3),
    ('2015-08-01 03:35:48', 3),
    ('2015-08-01 03:36:03', 3),
    ('2015-08-01 03:36:02', 3),
    ('2015-08-01 03:36:08', 3),
    ('2015-08-01 03:36:09', 3),
    ('2015-08-01 03:36:24', 3),
    ('2015-08-01 03:36:33', 3),
    ('2015-08-01 04:30:06', 4),
    ('2015-08-01 04:36:33', 4),
    ('2015-08-01 06:03:12', 6),
    ('2015-08-01 06:03:24', 6),
    ('2015-08-01 06:03:26', 6),
    ('2015-08-01 06:03:29', 6),
    ('2015-08-01 06:03:30', 6),
    ('2015-08-01 06:04:16', 6),
    ('2015-08-01 06:25:25', 6),
    ('2015-08-01 06:25:33', 6),
    ('2015-08-01 06:26:31', 6),
    ('2015-08-01 06:26:42', 6),
    ('2015-08-01 06:26:47', 6),
    ('2015-08-01 06:26:49', 6),
    ('2015-08-01 06:26:53', 6),
    ('2015-08-01 06:28:10', 6),
    ('2015-08-01 06:28:11', 6),
    ('2015-08-01 06:28:12', 6),
    ('2015-08-01 06:31:26', 6),
    ('2015-08-01 06:32:02', 6),
    ('2015-08-01 06:32:03', 6),
    ('2015-08-01 06:32:08', 6),
    ('2015-08-01 06:32:39', 6),
    ('2015-08-01 06:32:42', 6),
    ('2015-08-01 06:32:47', 6),
    ('2015-08-01 06:33:55', 6),
    ('2015-08-01 06:37:11', 6),
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    ('2015-08-01 06:38:21', 6),
    ('2015-08-01 06:38:32', 6),
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    ('2015-08-01 06:41:33', 6),
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    ('2015-08-01 06:55:17', 6),
    ('2015-08-01 06:58:38', 6),
    ('2015-08-01 06:58:46', 6),
    ('2015-08-01 06:59:18', 6),
    ('2015-08-01 07:01:16', 7),
    ('2015-08-01 07:01:20', 7),
    ('2015-08-01 07:01:24', 7),
    ('2015-08-01 07:01:59', 7),
    ('2015-08-01 07:02:02', 7),
    ('2015-08-01 07:02:11', 7),
    ('2015-08-01 07:02:13', 7),
    ('2015-08-01 07:03:55', 7),
    ('2015-08-01 07:04:16', 7),
    ('2015-08-01 07:04:26', 7),
    ('2015-08-01 07:04:27', 7),
    ('2015-08-01 07:04:28', 7),
    ('2015-08-01 07:05:11', 7),
    ('2015-08-01 07:05:13', 7),
    ('2015-08-01 07:06:31', 7),
    ('2015-08-01 07:06:32', 7),
    ('2015-08-01 07:07:21', 7),
    ('2015-08-01 07:07:39', 7),
    ('2015-08-01 07:07:32', 7),
    ('2015-08-01 07:07:33', 7),
    ('2015-08-01 07:07:36', 7),
    ('2015-08-01 07:08:51', 7),
    ('2015-08-01 07:08:52', 7),
    ('2015-08-01 07:10:03', 7),
    ('2015-08-01 07:11:04', 7),
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    ('2015-08-01 07:11:17', 7),
    ('2015-08-01 07:11:35', 7),
    ('2015-08-01 07:12:15', 7),
    ('2015-08-01 07:14:31', 7),
    ('2015-08-01 07:14:43', 7),
    ('2015-08-01 07:15:29', 7),
    ('2015-08-01 07:16:05', 7),
    ('2015-08-01 07:16:07', 7),
    ('2015-08-01 07:17:25', 7),
    ('2015-08-01 07:17:39', 7),
    ('2015-08-01 07:19:13', 7),
    ('2015-08-01 07:27:46', 7),
    ('2015-08-01 07:28:04', 7),
    ('2015-08-01 07:28:10', 7),
    ('2015-08-01 07:28:12', 7),
    ('2015-08-01 07:29:17', 7),
    ('2015-08-01 07:31:36', 7),
    ('2015-08-01 07:31:45', 7),
    ('2015-08-01 07:31:48', 7),
    ('2015-08-01 07:31:52', 7),
    ('2015-08-01 07:31:54', 7),
    ('2015-08-01 07:31:55', 7),
    ('2015-08-01 07:32:01', 7),
    ('2015-08-01 07:32:08', 7),
    ('2015-08-01 07:32:12', 7),
    ('2015-08-01 07:33:00', 7);

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解决方案

这里的基本思想很简单：

如果@StartHour是前@EndHour
这两个值“之间”简单地返回行
如果@EndHour是前@StartHour：
返回行小于@EndHour ; 并
返回大于@StartHour 的行

逻辑可以很自然地实现为：

DECLARE @StartHour integer = 1, -- or 18 @EndHour integer = 5; -- or 5 SELECT * FROM dbo.MyLogs AS ML WHERE @StartHour < @EndHour AND ML.HourPart > @StartHour AND ML.HourPart < @EndHour UNION ALL SELECT * FROM dbo.MyLogs AS ML WHERE @StartHour > @EndHour AND ML.HourPart > @StartHour UNION ALL SELECT * FROM dbo.MyLogs AS ML WHERE @StartHour > @EndHour AND ML.HourPart < @EndHour;
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执行计划

此计划中的过滤器是启动过滤器。在执行时，将根据当时局部变量的值执行顶部分支或两个较低分支。将查询拆分为三个简单的部分可以有效地使用HourPart上的索引。

在Stack Exchange Data Explorer上试试

或者尝试将提供的示例数据转换为将HourPart列作为索引计算列的更新版本。

如果打算将开始和结束参数包含在内，只需将<和>比较运算符分别更改为<=和>=。

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