SQL query to select a value based on certain criteria - mysql

Question

I have the following data in my Database:
Id MachineName CategoryName CounterName InstanceName RawValue
11180 SERVER64 Process ID Process w3wp#2 2068
11180 SERVER64 Process Working Set w3wp#2 9310208
Now I want to achieve that if I find the value '2068' for the "ID Process" Countername then I want to retrieve the Working Set RawValue. So based on the value of ID Process I now the [InstanceName] = w3wp#2 and therefore I want the value to retrieve = 9310208
Now I tried different SQL queries:
SELECT *
FROM [dbo].[LoadTest]
WHERE [LoadTestRunId] = '11180' and [CategoryName] = 'Process' and [InstanceName] like 'w3wp%'
But I need a filter. Can anyone guide me into the right direction?

Answer 1

This here will help you. I used variable because you need to find a specific ID
SQL Code
declare #myt table (id int,MachineName nvarchar(50),CategoryName nvarchar(50),CounterName nvarchar(50),InstanceName nvarchar(50),RawValue int)
insert into #myt
values
(11180 ,'SERVER64','Process','ID Process','w3wp#2',2068),
(11180 ,'SERVER64','Process','Working Set','w3wp#2',9310208)
declare #FindID int
Set #FindID = 2068;
with IdProcess as (
Select * from #myt
where RawValue = #FindID and CounterName = 'ID Process'
)
Select a.ID,a.MachineName,a.CategoryName,b.CounterName,a.InstanceName,b.RawValue from IdProcess a
inner join #myt b on a.InstanceName = b.InstanceName and b.CounterName='Working Set'
SQL Code without variable based on ID and InstanceName
with IdProcess as (
Select * from #myt
where CounterName = 'ID Process'
)
Select a.ID,a.MachineName,a.CategoryName,b.CounterName,a.InstanceName,b.RawValue from IdProcess a
inner join #myt b on a.id = b.id and a.InstanceName = b.InstanceName and b.CounterName='Working Set'
SQL Code with CategoryName filter
with IdProcess as (
Select * from #myt
where CounterName = 'ID Process' and CategoryName = 'Process'
)
Select a.ID,a.MachineName,a.CategoryName,b.CounterName,a.InstanceName,b.RawValue from IdProcess a
inner join #myt b on a.id = b.id and a.InstanceName = b.InstanceName and b.CounterName='Working Set'
where b.CategoryName = 'Process'
Result

Answer 2

This will execute.
Select * from (SELECT ROW_NUMBER() OVER(PARTITION BY LoadTestRunId ORDER BY LoadTestRunId DESC) as row,*
FROM [dbo].[LoadTest]) t1 where row=1
with your where clause
Select * from (SELECT ROW_NUMBER() OVER(PARTITION BY LoadTestRunId ORDER BY LoadTestRunId DESC),*
FROM [dbo].[LoadTest]) t1 where t1=1
and [LoadTestRunId] = '11180' and [CategoryName] = 'Process' and [InstanceName] like 'w3wp%'