How to have one taxonomy/ category first in the list then the rest order alphabetically

Hello,

I want to be able to select a category/taxonomy to put first in a list, then show the rest ordered alphabetically.

Can anyone point me in the direction of a wordpress function or filter to achieve this please?

eg. on a country drop down in a search form:

England
Afghanistan
Albania
Andorra
Antarctica
Argentina...
igloobobAsked:
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Jim HornMicrosoft SQL Server Developer, Architect, and AuthorCommented:
Not sure about the topics you've listed here, but in SQL Server I pull this off by adding an < ALL > selection, UNIONing it with the rest of the list, and using a sort_order column to get the sorting correct.  
SELECT id, name, 1 as sort_order
FROM your_table
WHERE id= 42   -- 'or whatever id is England'
UNION ALL
SELECT id, name, 2 as sort_order
FROM your_table
WHERE id <> 42
ORDER BY sort_order, name

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Then in your front-end just display the id and name columns.
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igloobobAuthor Commented:
I got this working with a little help from a friend as follows...

add_filter('dropdown_sort','terms_sort','',2);
function terms_sort( $terms, $taxname )
{ 
  if($taxname === 'countries')
  {   
    $_a   = array();
    $_n   = array();
    foreach( $terms as $lterm )
    {
      if($lterm->name === 'Country  To Appear First')
      {
        $_n[$lterm->name] = $lterm;
        continue;
      }
      $_a[$lterm->name] = $lterm;
    }
    ksort($_a);
    return ($_n + $_a); 
  }
  return $terms;
}

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