Question

我有一张包含时间（列）和功率（列）的表格。我想在下表数据上计算不同的结果集：

我的表：

[timestamp]                         [power]

2016-01-06 13:32:27                    1
2016-01-06 13:33:27                    2
2016-01-06 13:34:27                    3
2016-01-06 13:35:27                    4
2016-01-06 13:36:27                    5
2016-01-06 13:37:27                    6
2016-01-06 13:38:27                    7
2016-01-06 13:39:27                    8
2016-01-06 13:40:27                    9
2016-01-06 13:41:27                    10

总计：

 [timestamp]                         [power]              Total

2016-01-06 13:32:27                    1                    1
2016-01-06 13:33:27                    2                    3
2016-01-06 13:34:27                    3                    6
2016-01-06 13:35:27                    4                    10
2016-01-06 13:36:27                    5                    15
2016-01-06 13:37:27                    6                    21
2016-01-06 13:38:27                    7                    28
2016-01-06 13:39:27                    8                    36
2016-01-06 13:40:27                    9                    45
2016-01-06 13:41:27                    10                   55

每5分钟的总数为：

[timestamp]                         [power]              Total_every_5minutes

--2016-01-06 13:32:27                    1                    1
--2016-01-06 13:33:27                    2                    3
--2016-01-06 13:34:27                    3                    6
--2016-01-06 13:35:27                    4                    10
2016-01-06 13:36:27                    5                    15
--2016-01-06 13:37:27                    6                    21
--2016-01-06 13:38:27                    7                    28
--2016-01-06 13:39:27                    8                    36
2016-01-06 13:40:27                    9                    45

类似地，我想计算平均值，最小值，最大值，标准偏差，＆amp;计数。截至目前，我已经编写了一个查询，其中将添加一列

请注意：我不应该写存储过程。由于我有一个用户选择数据库的Windows应用程序，它将列出表，从列出的表中用户选择列，并在特定列上设置计算总数等。选择后，查询正在构建。并且查询将执行并将结果绑定到datagridview。

IF OBJECT_ID('tempdb..#mytemptable') IS NOT NULL DROP TABLE #mytemptable;
SELECT  SUM( CAST ([power] AS bigint)  ) AS power_TOTAL  INTO #MYTEMPTABLE 
  FROM ( SELECT t1.[timestamp], t1.[power] FROM [REPORT] t1 ) TEMPTABLE
SELECT t1.[timestamp], t1.[power], RM_temp.* FROM [REPORT] t1 , #MYTEMPTABLE RM_temp;

Answer 1

可能会根据您的数据

为您服务

DECLARE @Table1  TABLE 
    ( timestamp  varchar(19),  power  int)
;

INSERT INTO @Table1
    ( timestamp ,  power )
VALUES
    ('2016-01-06 13:32:27', 1),
    ('2016-01-06 13:33:27', 2),
    ('2016-01-06 13:34:27', 3),
    ('2016-01-06 13:35:27', 4),
    ('2016-01-06 13:36:27', 5),
    ('2016-01-06 13:37:27', 6),
    ('2016-01-06 13:38:27', 7),
    ('2016-01-06 13:39:27', 8),
    ('2016-01-06 13:40:27', 9),
    ('2016-01-06 13:41:27', 10)
;


Select [timestamp],[power] from (
SELECT timestamp, power , RunningTotal = power + COALESCE(
(
  SELECT SUM(power)
    FROM @Table1 AS i
    WHERE i.timestamp < o.timestamp), 0
)
FROM @Table1 AS o)TT where  exists (Select * from (select power * 5 ID from @Table1) T WHERE T.id = TT.RunningTotal )
ORDER BY timestamp;

sql查询获得运行平均值，最小值，最大值，总计，标准差，每5分钟计数一次

1 个答案: