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    ASE, SQL, OLE, ADE

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    Distinguished Contributor
    Posts: 309
    Registered: ‎10-02-2003

    ADOLisp - Select rows with null values

    138 Views, 1 Replies
    01-02-2013 10:19 AM

    Hi - I'm attempting to update a database so that all fields in a specified column that have a null value and are of datatype number are allocated a value of 0 (zero), but I'm having trouble selecting the offending rows..

    my statement is

    "select * from crossings where pipeline_id = null"

    and this returns nothing (although I know there are some in there because if i run the following:

    "select * from crossings where pipeline_id <> null"

    it returns all rows that have a value and omits those that don't (ie the ones that I want)

    Anyone know what I'm doing wrong?

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    Distinguished Contributor
    Posts: 309
    Registered: ‎10-02-2003

    Re: ADOLisp - Select rows with null values

    01-03-2013 02:07 AM in reply to: petervose

    Realised I should use keyword "IS" instead of using "="

    select * from crossings where pipeline_id IS null

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