Added new TSQL Query 📦

Author: blakedrumm

SQL Queries/Session_Performance_Details.sql

@@ -0,0 +1,66 @@
+-- Set the transaction isolation level to READ UNCOMMITTED
+SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
+
+-- Common Table Expression to calculate the maximum execution count for each plan handle
+WITH ExecutionCounts AS (
+    SELECT plan_handle, MAX(usecounts) AS execution_count
+    FROM sys.dm_exec_cached_plans
+    GROUP BY plan_handle
+)
+
+-- Retrieve session and performance details
+SELECT
+    er.session_id AS SPID, -- Session ID
+    CASE WHEN EXISTS (
+        SELECT 1
+        FROM master.dbo.sysprocesses sp
+        WHERE sp.blocked = er.session_id
+    ) THEN -1 ELSE er.blocking_session_id END AS BlkBy, -- Blocking Session ID (if exists), otherwise Blocking Session ID
+    er.total_elapsed_time AS ElapsedMS, -- Total elapsed time
+    er.cpu_time AS CPU, -- CPU time
+    er.logical_reads + er.reads AS IOReads, -- I/O reads
+    er.writes AS IOWrites, -- I/O writes
+    ec.execution_count AS Executions, -- Execution count
+    er.command AS CommandType, -- Command type
+    er.last_wait_type AS LastWaitType, -- Last wait type
+    OBJECT_SCHEMA_NAME(qt.objectid, dbid) + '.' + OBJECT_NAME(qt.objectid, qt.dbid) AS ObjectName, -- Object name
+    er.wait_resource AS waitresource, -- Wait resource
+    SUBSTRING(qt.text, (er.statement_start_offset + 2) / 2, 
+        (CASE WHEN er.statement_end_offset = -1
+            THEN LEN(CONVERT(nvarchar(MAX), qt.text)) * 2
+            ELSE (er.statement_end_offset - er.statement_start_offset + 2) / 2
+        END)) AS SQLStatement, -- SQL statement
+    ses.STATUS AS [STATUS], -- Session status
+    ses.login_name AS [Login], -- Login name
+    ses.host_name AS Host, -- Host name
+    DB_Name(er.database_id) AS DBName, -- Database name
+    er.start_time AS StartTime, -- Start time
+    con.net_transport AS Protocol, -- Network protocol
+    CASE ses.transaction_isolation_level
+        WHEN 0 THEN 'Unspecified'
+        WHEN 1 THEN 'Read Uncommitted'
+        WHEN 2 THEN 'Read Committed'
+        WHEN 3 THEN 'Repeatable'
+        WHEN 4 THEN 'Serializable'
+        WHEN 5 THEN 'Snapshot'
+    END AS transaction_isolation, -- Transaction isolation level
+    con.num_writes AS ConnectionWrites, -- Connection writes
+    con.num_reads AS ConnectionReads, -- Connection reads
+    con.client_net_address AS ClientAddress, -- Client address
+    con.auth_scheme AS Authentication, -- Authentication scheme
+    GETDATE() AS DatetimeSnapshot -- Current datetime
+FROM sys.dm_exec_requests er
+LEFT JOIN sys.dm_exec_sessions ses ON ses.session_id = er.session_id
+LEFT JOIN sys.dm_exec_connections con ON con.session_id = ses.session_id
+OUTER APPLY sys.dm_exec_sql_text(er.sql_handle) AS qt
+OUTER APPLY (
+    SELECT MAX(execution_count) AS execution_count
+    FROM ExecutionCounts
+    WHERE plan_handle = er.plan_handle
+) ec
+WHERE er.session_id <> @@SPID -- Exclude the current session
+AND ses.status = 'running' -- Show only running status
+ORDER BY
+    er.blocking_session_id DESC, -- Sort by blocking session ID (descending)
+    IOReads DESC, -- Sort by I/O reads (descending)
+    er.session_id; -- Sort by session ID