Version 4.3.0

system/Db/Select.php

@@ -154,7 +154,14 @@ class _Select implements \Iterator, \Countable
 		}
 		elseif ( is_array( $table ) )
 		{
-			$query .= " `{$this->db->prefix}{$table[0]}` AS `{$table[1]}`";
+			if ( \substr( $table[0], 0, 1 ) === '(' )
+			{
+				$query .= " {$table[0]} AS `{$table[1]}`";
+			}
+			else
+			{
+				$query .= " `{$this->db->prefix}{$table[0]}` AS `{$table[1]}`";
+			}
 		}
 		else
 		{