Remove #activity_stats, easy to add for another gem or per user if needed.

Author: metaskills

lib/active_record/connection_adapters/sqlserver/database_statements.rb

@@ -190,51 +190,6 @@ def newsequentialid_function
           select_value 'SELECT NEWSEQUENTIALID()'
         end
 
-        def activity_stats
-          select_all %|
-            SELECT
-               [session_id]    = s.session_id,
-               [user_process]  = CONVERT(CHAR(1), s.is_user_process),
-               [login]         = s.login_name,
-               [database]      = ISNULL(db_name(r.database_id), N''),
-               [task_state]    = ISNULL(t.task_state, N''),
-               [command]       = ISNULL(r.command, N''),
-               [application]   = ISNULL(s.program_name, N''),
-               [wait_time_ms]  = ISNULL(w.wait_duration_ms, 0),
-               [wait_type]     = ISNULL(w.wait_type, N''),
-               [wait_resource] = ISNULL(w.resource_description, N''),
-               [blocked_by]    = ISNULL(CONVERT (varchar, w.blocking_session_id), ''),
-               [head_blocker]  =
-                    CASE
-                        -- session has an active request, is blocked, but is blocking others
-                        WHEN r2.session_id IS NOT NULL AND r.blocking_session_id = 0 THEN '1'
-                        -- session is idle but has an open tran and is blocking others
-                        WHEN r.session_id IS NULL THEN '1'
-                        ELSE ''
-                    END,
-               [total_cpu_ms]   = s.cpu_time,
-               [total_physical_io_mb]   = (s.reads + s.writes) * 8 / 1024,
-               [memory_use_kb]  = s.memory_usage * 8192 / 1024,
-               [open_transactions] = ISNULL(r.open_transaction_count,0),
-               [login_time]     = s.login_time,
-               [last_request_start_time] = s.last_request_start_time,
-               [host_name]      = ISNULL(s.host_name, N''),
-               [net_address]    = ISNULL(c.client_net_address, N''),
-               [execution_context_id] = ISNULL(t.exec_context_id, 0),
-               [request_id]     = ISNULL(r.request_id, 0),
-               [workload_group] = N''
-            FROM sys.dm_exec_sessions s LEFT OUTER JOIN sys.dm_exec_connections c ON (s.session_id = c.session_id)
-            LEFT OUTER JOIN sys.dm_exec_requests r ON (s.session_id = r.session_id)
-            LEFT OUTER JOIN sys.dm_os_tasks t ON (r.session_id = t.session_id AND r.request_id = t.request_id)
-            LEFT OUTER JOIN
-            (SELECT *, ROW_NUMBER() OVER (PARTITION BY waiting_task_address ORDER BY wait_duration_ms DESC) AS row_num
-                FROM sys.dm_os_waiting_tasks
-            ) w ON (t.task_address = w.waiting_task_address) AND w.row_num = 1
-            LEFT OUTER JOIN sys.dm_exec_requests r2 ON (r.session_id = r2.blocking_session_id)
-            WHERE db_name(r.database_id) = '#{current_database}'
-            ORDER BY s.session_id|
-        end
-
         # === SQLServer Specific (Rake/Test Helpers) ==================== #
 
         def recreate_database

test/cases/connection_test_sqlserver.rb

@@ -234,18 +234,6 @@ def execute_with_deadlock_exception(sql, *args)
 
   end
 
-  context 'Diagnostics' do
-
-    should 'testing #activity_stats' do
-      stats = @connection.activity_stats
-      assert !stats.empty?
-      assert stats.all? { |s| s.has_key?("session_id") }
-      assert stats.all? { |s| s["database"] == @connection.current_database }
-    end
-
-  end
-
-
 
   private