• Thanks free_mascot.

    But

    "In SQL Server 2012...

    Is it true for SQL Server 2005?

    And these statistics created by optimizer are some kind of "auto created" ( _WA_sys_ ) statistics?

    If i try to run this query:

    SELECT STATS_DATE(OBJECT_ID('my_table_name'),index_id)

    it returns a "last update" for this index statistic that is older than my index rebuild date.

    Am I missing something?