text: DECLARE @sql nvarchar(max),
  	@id sysname;--
  
  SET @sql = 'ALTER TABLE /*_*/mwuser DROP CONSTRAINT ';--
  
  SELECT @id = df.name
  FROM sys.default_constraints df
  JOIN sys.columns c
  	ON c.object_id = df.parent_object_id
  	AND c.column_id = df.parent_column_id
  WHERE
  	df.parent_object_id = OBJECT_ID('/*_*/mwuser')
  	AND c.name = 'user_options';--
  
  SET @sql = @sql + @id;--
  
  EXEC sp_executesql @sql;--
  
  ALTER TABLE /*_*/mwuser DROP COLUMN user_options;
  