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Editorial Team
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Asked: 2026-05-26T18:50:59+00:00

I have a database made up a single table with several fields, one of

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I have a database made up a single table with several fields, one of which is a phone number that is stored as a NUMERIC. Because the phone number is 10 digits, in my code I have captured the variable as a LONG.

My question is, in the insert statement, how do I pass a NULL value? Is this possible at all? I can’t assign a null value to the LONG variable, so I’m wondering how to go about doing this…

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1 Answer

  1. Editorial Team

    If you desperately need to use numerics for the phone number, why not just code a non-existing phone number into something like 0L or -1L?

    Edit: Btw, you say that the database is limited to numeric format. Does the same go for the java side?

    long dbPhoneNumber = getTheLongFieldFromTheDatabase();
String internalPhoneNumberRepresentation = Long.toString(dbPhoneNumber);
doSomethingWithString();
dbPhoneNumber = internalPhoneNumberRepresentation == null ? 0L : internalPhoneNumberRepresentation;
storeLongFieldToDatabase(dbPhoneNumber);

    Should more or less do all you need, right?

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