Question

I have a database where I put comments in the Description property of many columns in my tables to describe the columns. The Description property apparently is implemented as an Extended Property named MS_Description.

Now I need to copy the database to SQL Azure, that does not permit Extended Properties. What is the Transact SQL commands available to search every column for the Extended Property MS_Description and delete it.

Answer 1

Here you have a detailed explanation on how to list extended properties on SQL Server 2008R2.
Then at the end of that page you have several references, one of them is to the sp_dropextendedproperty. Make use of it at will.

One blog with useful information and detailed samples.

Here you have a code sample to show all extended properties for columns in a table:

USE AdventureWorks2008R2;
GO
SELECT major_id, minor_id, t.name AS [Table Name],
       c.name AS [Column Name],
       value AS [Extended Property]
  FROM sys.extended_properties AS ep
 INNER JOIN sys.tables AS t ON ep.major_id = t.object_id 
 INNER JOIN sys.columns AS c ON ep.major_id = c.object_id
       AND ep.minor_id = c.column_id
 WHERE class = 1;
GO

Even more samples here