The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 10: Integrating FILESTREAM with other SQL Server FeaturesBIGINT value, perform the required bitwise operation and then convert the new value toa VARBINARY so that a string representation of the hex value can be created from that, asshown in Listing 10-5.DECLARE@options VARBINARY(8),@prev BIGINT-- Set the flag to replicate FILESTREAM flag using a bitwise OR-- We'll assume that the previous value is 0x000000000803509FSELECT @prev = 0x000000000803509FSELECT @prev = @prev | 0x100000000SELECT @options = CAST(@prev AS VARBINARY(8))SELECT @options-- Original Value: 0x000000000803509F-- New Value : 0x000000010803509F-- Note the flag : ---------^--------Listing 10-5:Turning the FILESTREAM replication flag on by performing a bitwise OR operation.To turn off the FILESTREAM replication flag, we need to run the reverse operation and toclear a specific bit in the configuration value using a bitwise NOT operation. Listing 10-6shows how to do this.DECLARE@options VARBINARY(8),@prev BIGINT-- Clear the FILESTREAM repl flag using a bitwise NOT operation-- We'll assume that the previous value is 0x000000010803509FSELECT @prev = 0x000000010803509FSELECT @prev = @prev ^ 0x100000000SELECT @options = CAST(@prev AS VARBINARY(8))SELECT @options-- Original Value: 0x000000010803509F-- New Value : 0x000000000803509F-- Note the flag : ---------^--------Listing 10-6:Turning the FILESTREAM replication flag off by performing a bitwise NOT operation.363