delete duplicate records with trigger

  • Have orderrebate table.

    ord_type ord_no item_no line_seq_no cd_tp

    O 55 Part 1 1

    O 55 Part 1 3

    O 56 Part4 1 3

    When the above records are inserted into orderrebate. After the insert I want to delete line 2. When distinct records come in based on the first 4 fields above I want to delete the on with cd_tp 3 and keep the one with cd_tp 1. If one record comes in with cd_tp 3 I want to keep it. I'm only deleting records with cd_tp 3 if they have a corresponding record with a cd_tp 1.

    Nothing seems to work. This is my last hurdle in getting my program complete and I hitting a wall. Any help would be greatly appreciated.

    Here is one of many examples I've tried with no luck:

    delete OrderRebate

    FROM OrderRebate

    inner join inserted on inserted.ord_type = OrderRebate.ord_type and

    inserted.ord_no = OrderRebate.ord_no and inserted.line_seq_no = OrderRebate.line_seq_no

    where inserted.ord_type = OrderRebate.ord_type and inserted.ord_no = OrderRebate.ord_no

    and inserted.line_seq_no = OrderRebate.line_seq_no and inserted.cd_tp = '3'

    and exists

    (

    select ord_type, ord_no, item_no, line_seq_no

    from OrderRebate

    where

    inserted.ord_type = ord_type and

    inserted.ord_no = item_no and

    inserted.ord_no = ord_no and inserted.line_seq_no = line_seq_no

    group by ord_type, ord_no, item_no, line_seq_no

    having count(*)>1

    )

  • Please read: ... http://www.sqlservercentral.com/articles/Best+Practices/61537/

    Following the above best practices will help us help you.

    This appears to be a cross posting of

    http://www.sqlservercentral.com/Forums/Topic522558-145-1.aspx#bm522906

    Is it?

    If everything seems to be going well, you have obviously overlooked something.

    Ron

    Please help us, help you -before posting a question please read[/url]
    Before posting a performance problem please read[/url]

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