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<input type=checkbox name=col1 value=1>NEW
<input type=checkbox name=col2 value=4>PENDING
<input type=checkbox name=col3 value=9>CLOSED

$sum = $form{'col1'} + $form{'col2'} + $form{'col3'};

%possibleSQLargs = {
        1 => "and table.column = 'NEW'";
...
    };

$extraqueryarg = $possibleSQLargs{'$sum'};