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conditional auto-increment??

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    conditional auto-increment??

    Is there a way to have a field conditionally auto increment? I would like to have a logical field to indicate whether a customer is leaving a vehicle with us; and then have another field that would generate an incremented number every time a vehicle is left with us. There will be many records in the table that will not have a vehicle being left, so a normal auto increment rule will not work.

    Or maybe there is another way to achomplish my goal. I need a sequential number to be generated everytime there will be a vehicle being left with us for repair and everytime we will manufacture a new vehicle. Sometimes one transaction will involve both a new vehicle and an old one being left with us.

    Any thoughts or suggestions would be appreciated.

    #2
    RE: conditional auto-increment??

    You would need to generate this number by yourself through xbasic.

    set up a field for the unique sequence number.

    create an index for that field.

    in the can_save event for the record, test to see if the "left with you" field is filled.

    If so, do a looku to your database with the "last" option).

    lookupn("L","99999",sequence #,database name,sequence
    #index))

    (this will give you the last entered sequence number)

    get the number, increment it by 1, then return to your record and plug this number into your sequence # field.

    All of this gets done BEFORE the record is actually saved

    This should accomplish waht you want.

    Tom

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