The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 6: FILESTREAM with SSIS and SSRS1. Start a SQL Server transaction at the beginning, process all the rows and commit.2. Start a SQL Server transaction before processing each row and commit when thegiven row is processed.We will take Option 2 for this lab because, with this approach, locks are placed on eachrow only for a minimal period of time. A row will be locked only when the processingstarts and the lock will be released as soon as the given row is processed.To load each image file into the FILESTREAM column, we will need the pieces ofinformation below:• the FILESTREAM transaction context• the FILESTREAM logical path (the PathName() value)• the name and location of the image file on the disk (to be loaded into the FILESTREAMcolumn).We'll create another stored procedure that accepts the ItemID and returns the aboveinformation. Listing 6-8 shows how to create the stored procedure.USE [NorthPole]GOCREATE PROCEDURE [dbo].[GetItemInfo] ( @ItemID INT )AS-- ------------------------------------------------------------------- If the FILESTREAM column is NULL, we cannot retrieve PathName().-- In such a case, we need to use a dummy value-- -----------------------------------------------------------------UPDATE dbo.itemsSET ItemImage = 0xWHERE ItemID = @ItemIDAND ItemImage IS NULL234