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  1. 03-12-2007

    Thread: Hi

    by bbkcdb
    Answers
    11
    Views
    5,546

    SQL Hi

    Select AVG(tax) from invoice where type='sales tax'

    even though there are records in the invoice table why does the above query return null
  2. 03-12-2007

    Thread: How to display following matrix?

    by bbkcdb
    Answers
    4
    Views
    4,503

    SQL Re: How to display following matrix?

    select AVG(tax) from invoice where type='sales tax'
    what is the error n above query
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