返回一列的总行数

Question

我在下面查询 return 指定 SQL 实例的性能数据。我遇到的问题是相同的文本数据针对不同的时间范围 returned。我正在寻找一种方法来总结相同行的文本数据和 return 总计 cpu、持续时间、读取、写入。

感谢您的帮助。

SELECT TOP 40 HostName, DatabaseName, ApplicationName,
       LoginName, CPU, TextData,
       Reads, Writes, Duration, StartTime, EndTime
FROM dbo.PerformanceTable 
WHERE  Duration > 10000

Answer 1

你只是想要聚合吗？

SELECT TextData,
       SUM(Reads), SUM(Writes), SUM(Duration)
FROM dbo.PerformanceTable 
WHERE Duration > 10000
GROUP BY TextData;

Answer 2

没有示例数据，很难提出解决方案。如果我理解正确的话，你想要每个主机名、数据库名、应用程序名、TextData 的总 cpu、持续时间、读取、写入，而不管它们的开始时间或结束时间。

SELECT HostName, DatabaseName, ApplicationName,TextData,
       sum(CPU), sum(Reads), sum(Writes), sum(Duration)
FROM dbo.PerformanceTable 
group by HostName, DatabaseName, ApplicationName,TextData
WHERE  Duration > 10000
order by HostName, DatabaseName, ApplicationName,TextData

根据您添加的屏幕截图，我修改了我的答案：

SELECT DatabaseName, TextData,
       sum(CPU) total_CPU , sum(Reads) total_Reads, sum(Writes) total_Writes , sum(Duration) total_Duration
FROM dbo.PerformanceTable 
group by DatabaseName, TextData
WHERE  Duration > 10000
order by DatabaseName, TextData

Answer 3

我已经用示例数据进行了测试，两种方式都给出了相同的答案。看一看。使用的聚合

CREATE TABLE PerformanceTable
  (
  TextData VARCHAR(MAX)
 , DatabaseName VARCHAR(100)
 ,CPU BIGINT
 ,READS BIGINT
 ,WRITES BIGINT
, Duration Bigint
 )

 INSERT INTO PerformanceTable  (TextData,DatabaseName,CPU, READS,WRITES,Duration) VALUES ('text', 'master', 45632589,2589633,15106,1457889)
 ,('text', 'master', 45678999,4666767,1001,10002)
 ,('text1', 'DatabSeName', 45678999,6778888,45689,10256)
 ,('text1', 'DatabSeName', 546789,6778888,56378,14578)
 ,('text2', 'MsDb', 546789,6778888,457896,478999)

第一种方式 - 所有其他版主都提供了，这应该可以正常工作。

 SELECT 
  TextData
 ,SUM(CPU) AS cpu_sum
 ,SUM(READS) AS Reads_sum
 ,SUM(WRITES) AS writes_sum
 ,SUM(Duration) AS duration_sum
FROM PerformanceTable
WHERE Duration >1000
GROUP BY TextData

另一种方式

SELECT 
*
FROM 
(
 SELECT 
   ROW_NUMBER() OVER( PARTITION BY TextData ORDER BY TextData ) AS row_id
  ,TextData
  ,SUM(CPU) AS cpu_sum
  ,SUM(READS) AS Reads_sum
  ,SUM(WRITES) AS writes_sum
  ,SUM(Duration) AS duration_sum
FROM PerformanceTable
GROUP BY TextData
) AS A WHERE 
A.row_id = 1
AND  A.duration_sum >1000

返回一列的总行数

Returning total rows for one column

sql

tsql

sql-server

aggregate