SQL Server Performance

Poor Performance when I change data type

Discussion in 'Performance Tuning for DBAs' started by AlejoDuran, Aug 5, 2003.

  1. AlejoDuran New Member

    I changed the data type of a column in a production table, char(1) to char(20) (easy isn't it) and my query's performace decrease up to 100%!!!

    I delete and rebuild all the indexes, but itn't work...I need to fix the problem quicky...

    Somebody can help me?

    Ing. Alejandro Duran
  2. Luis Martin Moderator

    Did you update statistics after change?

    Luis Martin
  3. AlejoDuran New Member

    Yes... I forgot to write that.

    Ing. Alejandro Duran
  4. Luis Martin Moderator

    Would you show the query's?.

    And, please, all information about: rows, columns, keys, foreing keys, relationship with others tables,etc.


    Luis Martin
  5. gaurav_bindlish New Member

    Are you sure there is no data typw mismatch in the query?

    Man thrives, oddly enough, only in the presence of a challenging environment- L. Ron Hubbard
  6. rushmada New Member

    Why cant u try with varchar than char. If the data is fixed then let it be
    with char(20).


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