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@ -93,14 +93,27 @@ class rcube_db_sqlsrv extends rcube_db
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*/
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protected function set_limit($query, $limit = 0, $offset = 0)
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{
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// code from MDB2 package
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if ($limit > 0) {
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$fetch = $offset + $limit;
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return preg_replace('/^([\s(])*SELECT( DISTINCT)?(?!\s*TOP\s*\()/i',
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"\\1SELECT\\2 TOP $fetch", $query);
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$limit = intval($limit);
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$offset = intval($offset);
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$orderby = stristr($query, 'ORDER BY');
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if ($orderby !== false) {
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$sort = (stripos($orderby, ' desc') !== false) ? 'desc' : 'asc';
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$order = str_ireplace('ORDER BY', '', $orderby);
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$order = trim(preg_replace('/\bASC\b|\bDESC\b/i', '', $order));
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}
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// @TODO: proper OFFSET handling i _fetch_row()
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$query = preg_replace('/^SELECT\s/i', 'SELECT TOP ' . ($limit + $offset) . ' ', $query);
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$query = 'SELECT * FROM (SELECT TOP ' . $limit . ' * FROM (' . $query . ') AS inner_tbl';
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if ($orderby !== false) {
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$query .= ' ORDER BY ' . $order . ' ';
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$query .= (stripos($sort, 'asc') !== false) ? 'DESC' : 'ASC';
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}
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$query .= ') AS outer_tbl';
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if ($orderby !== false) {
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$query .= ' ORDER BY ' . $order . ' ' . $sort;
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}
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return $query;
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}
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