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lunr/gradesql.php

Created November 13, 2012 21:40
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Grade SQL Selection
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gradesql.php
$sql = "SELECT * FROM alpha WHERE letter REGEXP '%s' ORDER BY letter DESC;";
$letter = 'LL';
$regex = '^'.$letter.'$|^[A-'.(strlen($letter) > 1 ? substr($letter, -1) : chr(ord(substr($letter, -1)) - 1)).'].?$';
echo sprintf($sql, $regex);
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