Question

我试图找出一周内平均每秒IIS调用（GET，POST，PUT等）的平均次数

这是一个SELECT的示例，我将用它来获取一周内的总数：

  SELECT Method, COUNT(*) 
      AS TotalCalls
    FROM IISLog
   WHERE dDate 
 BETWEEN '2018-05-10' 
     AND '2018-05-17'
GROUP BY Method

如何在此日期范围内细化此SELECT以获得平均每秒的方法调用计数？

每秒呼叫的预期输出：

Method    CallsPerSecond
Get       15
Put       10
Post      14
Delete    12

数字只是示例估算值

Answer 1

只需除以构成过滤器范围的秒数即可。

DECLARE @StartDate DATETIME = '2018-05-10'
DECLARE @EndDate DATETIME = '2018-05-17'

SELECT 
    Method, 
    CallsPerSecond = COUNT(*) / NULLIF(DATEDIFF(SECOND, @StartDate, @EndDate), 0),
    TotalCalls = COUNT(*)
FROM 
    IISLog AS I
WHERE 
    I.dDate BETWEEN @StartDate AND @EndDate
GROUP BY 
    I.Method

每秒IIS方法调用的SELECT平均计数

1 个答案: