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Converting Existing table from BLOB to Filestream

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1. Create FILESTREAM filegroup.

2. Add FILESTREAM column to table

3.   Choose one of:

a. Write an app to select data from the BLOB column and stream it into the FILESTREAM column

b. UPDATE <table> SET <filestream_column> = <blob column>;

4. Drop blob column

Note: Filestream data is in a separate filegroup, so you can selectively back up all the other filegroups.

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