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  1. #1
    drimades is offline Member
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    Default Checking duplicates values in key field

    I have a form in my netbeans javadb app to insert values into a table. I want to warn the user if he inserts a duplicated value in form.
    How can I do it from code?

    I use an "insert into" statement to put data in db.

  2. #2
    Tolls is offline Moderator
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    Default Re: Checking duplicates values in key field

    If the user is not supposed to enter duplicate values then make that column UNIQUE.
    Please do not ask for code as refusal often offends.

    ** This space for rent **

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