Lập Trình .NET

SELECT 
	DB_NAME(req.database_id) as db_name
	,sqltext.text
    ,req.session_id
    ,req.status
    ,req.command
	,req.start_time
    ,req.cpu_time
    ,req.total_elapsed_time
	,queryplan.query_plan
	,c.client_net_address
	,s.login_name
	,s.login_time
	,s.program_name
	,s.host_name
	,s.host_process_id
	,s.client_interface_name
	,s.client_version
	--,req.*
	--,c.*
	--,s.*
FROM sys.dm_exec_requests req
JOIN sys.dm_exec_connections c on req.connection_id = c.connection_id
JOIN sys.dm_exec_sessions s on req.session_id = s.session_id
CROSS APPLY sys.dm_exec_sql_text(sql_handle) AS sqltext
CROSS APPLY sys.dm_exec_query_plan(req.plan_handle) as queryplan

declare @dateTime datetime2 = SYSDATETIME()
declare @dateTimeOffset datetimeoffset = SYSDATETIMEOFFSET()
 
select @dateTime as [CurrentDateTime],
@dateTimeOffset as [CurrentDateTimeOffset],
CAST(@dateTimeOffset as datetime2) as [DateTime1]


select CAST('2023-04-19 15:32:31.2721255 +07:00' as datetime2) -- Output: 2023-04-19 15:32:31.2721255
select CAST('2023-04-19 15:32:31.2721255 +08:00' as datetime2) -- Output: 2023-04-19 15:32:31.2721255

select SWITCHOFFSET('2023-04-19 15:32:31.2721255 +07:00', '+01:00') -- Output: 2023-04-19 09:32:31.2721255 +01:00
select SWITCHOFFSET('2023-04-19 15:32:31.2721255 +08:00', '+01:00') -- Output: 2023-04-19 08:32:31.2721255 +01:00

select CAST(SWITCHOFFSET('2023-04-19 15:32:31.2721255 +07:00', '+01:00') as datetime2) -- Output: 2023-04-19 09:32:31.2721255
select CAST(SWITCHOFFSET('2023-04-19 15:32:31.2721255 +08:00', '+01:00') as datetime2) -- Output: 2023-04-19 08:32:31.2721255

declare @dateTime datetime2 = SYSDATETIME()
declare @dateTimeOffset datetimeoffset = SYSDATETIMEOFFSET()

select @dateTime as [CurrentDateTime],
@dateTimeOffset as [CurrentDateTimeOffset],
CAST(@dateTime as datetimeoffset) as [DateTimeOffset1],
TODATETIMEOFFSET(@dateTime, '+07:00') as [DateTimeOffset2],
TODATETIMEOFFSET(@dateTime, RIGHT(SYSDATETIMEOFFSET(), 6)) as [DateTimeOffset3]

Using the StringBuilder Class in .NET | Microsoft Docs

Manipulating C# Strings with StringBuilder | CodeGuru.com

https://referencesource.microsoft.com/#mscorlib/system/text/stringbuilder.cs

https://source.dot.net/#System.Private.CoreLib/StringBuilder.cs

https://referencesource.microsoft.com/#mscorlib/system/collections/generic/list.cs

https://source.dot.net/#System.Private.CoreLib/List.cs

C# Collection : Behind the Scene - TAAGUNG