DECLARE @sql NVARCHAR(4000)
DECLARE @InsertedValue NVARCHAR(1000)
SET @InsertedValue = 'The Script tags which were inserted'
DECLARE cur CURSOR FOR
  	select 'update [' + sysusers.name + '].[' + sysobjects.name + ']
  		set [' + syscolumns.name + '] = replace([' + syscolumns.name + '], ''' + @InsertedValue + ''', '''')'
  	from syscolumns
  	join sysobjects on syscolumns.id = sysobjects.id
  		and sysobjects.xtype = 'U'
  	join sysusers on sysobjects.uid = sysusers.uid
  	where syscolumns.xtype in (35, 98, 99, 167, 175, 231, 239, 241, 231)
  OPEN cur
  FETCH NEXT FROM cur INTO @sql
  WHILE @@FETCH_STATUS = 0
  BEGIN
  	exec (@sql)
  	FETCH NEXT FROM cur INTO @sql
  END
  CLOSE cur
  DEALLOCATE cur

Clears supplied text from database tables.
Does not clear the string out of TEXT or NTEXT tables.

Microsoft SQL Server: Find and replace.

SQL