TSQL for Update the multi-duplicated ID records

  • Hello all,

    I have a large data table with many duplicated ID records. A portion of my data table as following:

    ID | saleDate | SaleAmount

    ==============================

    40 | 06/23/2003 | 242

    41 | 11/30/2001 | 1000

    40 | 12/28/2006 | 343

    41 | 10/25/1996 | 154

    41 | 04/27/2007 | 1234

    42 | 05/07/2006 | 777

    I would like to update all duplicated records using SUM(SaleAmount) to replace for SaleAmount.

    The data result will be

    ID | saleDate | SaleAmount

    ==============================

    40 | 06/23/2003 | 585 (242 + 342)

    41 | 11/30/2001 | 2388 (1000+1234+154)

    40 | 12/28/2006 | 585

    41 | 10/25/1996 | 2388

    41 | 04/27/2007 | 2388

    42 | 05/07/2006 | 777

    Please help me with TSQL for update. Your time is much appreciated. Thanks in advance.

  • Try not to double-post.

    http://www.sqlservercentral.com/Forums/Topic412429-338-1.aspx

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    Your lack of planning does not constitute an emergency on my part...unless you're my manager...or a director and above...or a really loud-spoken end-user..All right - what was my emergency again?

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