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正交数据，这个直译过来不怎么理解，找了些资料还是不怎么理解，贴单一句英文解释（ 地址）
In computer terminology, something - such as a programming language or a data object - is orthogonal if it can be used without consideration as to how its use will affect something else.

该例子的数据模型如下： 

{
    "name":    "Tiger Nixon",
    "position":   "System Architect",
    "salary":    "$3,120",
    "start_date": {
        "display": "Mon 25th Apr 11",
        "timestamp": "1303682400"
    },
    "office":    "Edinburgh",
    "extn":    "5421"
}
NamePositionOfficeExtn.Start dateSalary
NamePositionOfficeExtn.Start dateSalary
Airi SatouAccountantTokyo5407Fri 28th Nov 08$162,700
Angelica RamosChief Executive Officer (CEO)London5797Fri 9th Oct 09$1,200,000
Ashton CoxJunior Technical AuthorSan Francisco1562Mon 12th Jan 09$86,000
Bradley GreerSoftware EngineerLondon2558Sat 13th Oct 12$132,000
Brenden WagnerSoftware EngineerSan Francisco1314Tue 7th Jun 11$206,850
Brielle WilliamsonIntegration SpecialistNew York4804Sun 2nd Dec 12$372,000
Bruno NashSoftware EngineerLondon6222Tue 3rd May 11$163,500
Caesar VancePre-Sales SupportNew York8330Mon 12th Dec 11$106,450
Cara StevensSales AssistantNew York3990Tue 6th Dec 11$145,600
Cedric KellySenior Javascript DeveloperEdinburgh6224Thu 29th Mar 12$433,060
Showing 1 to 10 of 57 entries
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$(document).ready(function() {
    $('#example').dataTable( {
        ajax: "data/orthogonal.txt",
        columns: [
            { data: "name" },
            { data: "position" },
            { data: "office" },
            { data: "extn" },
            { data: {
                _:    "start_date.display",
                sort: "start_date.timestamp"
            } },
            { data: "salary" }
        ]
    } );
} );
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<table id="example" class="display" cellspacing="0" width="100%">
        <thead>
            <tr>
                <th>Name</th>
                <th>Position</th>
                <th>Office</th>
                <th>Extn.</th>
                <th>Start date</th>
                <th>Salary</th>
            </tr>
        </thead>
 
        <tfoot>
            <tr>
                <th>Name</th>
                <th>Position</th>
                <th>Office</th>
                <th>Extn.</th>
                <th>Start date</th>
                <th>Salary</th>
            </tr>
        </tfoot>
    </table>

http://datatables.net/examples/ajax/orthogonal-data.html

Translation from DataTables.net, with permission