RCSI testing

Here’s some code to create a large number of ghost records.

--rcsi_testing.sql

-- create and populate a test table

CREATE TABLE dbo.demo_table
  (
      ID    INT       NOT NULL    IDENTITY (1, 1),
      C1    CHAR(100) NOT NULL
  );
  GO
   
  INSERT INTO dbo.demo_table (C1)
  SELECT TOP (1000)
         CAST(TEXT AS CHAR(100)) AS C1
  FROM   sys.messages
  WHERE  language_id = 1031;
  GO
    
  CREATE UNIQUE CLUSTERED INDEX cuix_demo_table_Id
  ON dbo.demo_table (Id);
  GO

 
-- start a 1 minute workload
 
  SET NOCOUNT ON;
  GO
  BEGIN TRANSACTION; ---------**********KEY
  GO
  	-- Insert new record into dbo.demo_table
  	DECLARE	@finish_date DATETIME2(0) = DATEADD(MINUTE, 1, GETDATE());
  	WHILE @finish_date >= GETDATE()
  	BEGIN
  		-- wait 10 ms before each new process
  		INSERT INTO dbo.demo_table(C1)
  		SELECT C1
  		FROM   dbo.demo_table
  		WHERE  Id = (SELECT MIN(Id) FROM dbo.demo_table);
    
  		-- Wait 10 ms to delete the first record from the table
  		WAITFOR DELAY '00:00:00:010';
    
  		-- Now select the min record from the table
  		DELETE dbo.demo_table WHERE Id = (SELECT MIN(Id) FROM dbo.demo_table);
  	END
  ROLLBACK TRAN;
  GO

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