unknown USE DeadlockTest; SET NOCOUNT ON; SET DEADLOCK_PRIORITY 10; DECLARE @anotherField INT = 0; DECLARE @fragmentationAchieved BIT = 0 DECLARE @databaseId as smallint = DB_ID(N'DeadlockTest'); DECLARE @objectId as INT = OBJECT_ID(N'dbo.TableWithFragmentedIndex'); DECLARE @indexId as SMALLINT = (SELECT ind.index_id FROM sys.indexes ind WHERE ind.[name] = 'IX_TableWithFragmentedIndex_AnotherField'); -- Run inserts and deletes until index fragmentation exceeds 50% WHILE (@fragmentationAchieved <> 1) BEGIN INSERT INTO TableWithFragmentedIndex (AnotherField) VALUES (@anotherField); IF @anotherField % 5 = 0 BEGIN DELETE TableWithFragmentedIndex WHERE Id = (@anotherField - 2); DELETE TableWithFragmentedIndex WHERE Id = (@anotherField - 3); END IF (SELECT stat.[avg_fragmentation_in_percent] FROM sys.dm_db_index_physical_stats (@databaseId, @objectId, @indexId, NULL, NULL) AS stat INNER JOIN sys.indexes AS i ON stat.[object_id] = i.[object_id] AND sta unknown -- Make sure to go to Query -> Query Options -> Results -> check "Discard -- results after execution" SET NOCOUNT ON; SET DEADLOCK_PRIORITY -10; WHILE 1 = 1 SELECT * FROM TableWithFragmentedIndex; -- Run the code below in a separate window --USE DeadlockTest; --SET NOCOUNT ON; --SET DEADLOCK_PRIORITY 10; --DECLARE @anotherField INT = 0; --DECLARE @fragmentationAchieved BIT = 0 --DECLARE @databaseId as smallint = DB_ID(N'DeadlockTest'); --DECLARE @objectId as INT = OBJECT_ID(N'dbo.TableWithFragmentedIndex'); --DECLARE @indexId as SMALLINT = (SELECT ind.index_id FROM sys.indexes ind WHERE ind.[name] = 'IX_TableWithFragmentedIndex_AnotherField'); --WHILE (@fragmentationAchieved <> 1) --BEGIN -- INSERT INTO TableWithFragmentedIndex (AnotherField) VALUES (@anotherField); -- IF @anotherField % 5 = 0 -- BEGIN -- DELETE TableWithFragmentedIndex WHERE Id = (@anotherField - 2); -- DELETE TableWithFragmentedIndex WHERE Id = (@anotherField - 3); -- END -- IF (SELECT stat