The Art of SQL Server FILESTREAM - Red Gate Software

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Chapter 2: Getting Started with FILESTREAMOnce the FILESTREAM filegroup has been added to the database, you can add aFILESTREAM file (which points to the FILESTREAM data container) using the T-SQLcommand in Listing 2-6.ALTER DATABASE NorthPoleADD FILE (NAME = NorthPole_fs,FILENAME = 'C:\ArtOfFS\Demos\Chapter2\NorthPole_fs')TO FILEGROUP NorthPole_fs ;GOListing 2-6:Adding a FILESTREAM data container to a database.The database is now FILESTREAM enabled. We can go ahead and start creating tablesthat contain FILESTREAM data.Creating a Table with FILESTREAM ColumnsOnce we have a FILESTREAM-enabled database, we are ready to go ahead and createtables containing FILESTREAM columns. A FILESTREAM column is a VARBINARY (MAX)column that has the FILESTREAM attribute enabled.Using SSMS table designer to create a table withFILESTREAM columnsYou will be surprised if you try to create a table with FILESTREAM columns using SSMStable designer in SQL Server 2008 and SQL Server 2008 R2 – it appears that the SSMSteam missed this feature, as there is no way to do this in the latest version at the time ofwriting (SQL Server 2012). You can create a table with a VARBINARY (MAX) column, butthere is no way to set the FILESTREAM flag on the column.60
Chapter 2: Getting Started with FILESTREAMTherefore, the recommended method for creating tables with FILESTREAM columnsis to write the CREATE TABLE statements using T-SQL (as described in the followingsection). Alternatively, you can do this in a two-step process: create all columns exceptthe FILESTREAM columns using the table designer, and then use T-SQL ALTER TABLEstatements to create the FILESTREAM column (see Using T-SQL to add FILESTREAMcolumns to an existing table, later in this chapter).Using T-SQL to create a table with FILESTREAMcolumnsThe script in Listing 2-7 creates a table with a FILESTREAM column. The FILESTREAMcolumn is created by adding the FILESTREAM attribute to the VARBINARY(MAX) columncalled ItemImage. Only VARBINARY(MAX) columns can be used for FILESTREAMstorage.CREATE TABLE [dbo].[Items]([ItemID] UNIQUEIDENTIFIER ROWGUIDCOLNOT NULLUNIQUE ,[ItemNumber] VARCHAR(20) ,[ItemDescription] VARCHAR(50) ,[ItemImage] VARBINARY(MAX) FILESTREAMNULL)Listing 2-7:Creating a table with a FILESTREAM column.Notice that FILESTREAM is not a data type; it is an attribute that you can set on aVARBINARY(MAX) column. Setting this attribute adds FILESTREAM storage capabilitiesto the column.61
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DBA HandbooksThe Art ofSQL Server F
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Copyright June 2012ISBN 978-1-90643
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Updating and deleting FILESTREAM da
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Creating the stored procedure to fe
Page 9 and 10: File Backups and Piecemeal Restores
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Page 13 and 14: Using SSMS to check that FILESTREAM
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Page 19 and 20: IntroductionWhen I first started my
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Appendix A: Configuring FILESTREAMo
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Appendix A: Configuring FILESTREAM
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