change table schema name in sql server

declare @sql varchar(8000), @table varchar(1000), @oldschema varchar(1000), @newschema   varchar(1000)

  set @oldschema = 'dbo'

  set @newschema = 'exe'

 while exists(select * from sys.tables where schema_name(schema_id) = @oldschema)

  begin

      select @table = name from sys.tables 

      where object_id in(select min(object_id) from sys.tables where  schema_name(schema_id)  = @oldschema)

    set @sql = 'alter schema ' + @newschema + ' transfer ' + @oldschema + '.' + @table

   exec(@sql)

 end