added Model::query() method for running arbitrary queries

YourModel::query("delete from users where name=?",array('bob'));

lib/Model.php

@@ -1478,6 +1478,18 @@ public static function find_by_sql($sql, $values=null)
 		return static::table()->find_by_sql($sql, $values, true);
 	}
 
+	/**
+	 * Helper method to run arbitrary queries against the model's database connection.
+	 *
+	 * @param string $sql SQL to execute
+	 * @param array $values Bind values, if any, for the query
+	 * @return object A PDOStatement object
+	 */
+	public static function query($sql, $values=null)
+	{
+		return static::connection()->query($sql, $values);
+	}
+
 	/**
 	 * Determines if the specified array is a valid ActiveRecord options array.
 	 *

test/ActiveRecordTest.php

@@ -469,5 +469,14 @@ public function test_id_setter_works_with_table_without_pk_named_attribute()
 		$author = new Author(array('id' => 123));
 		$this->assert_equals(123,$author->author_id);
 	}
+
+	public function test_query()
+	{
+		$row = Author::query('SELECT COUNT(*) AS n FROM authors',null)->fetch();
+		$this->assert_true($row['n'] > 1);
+
+		$row = Author::query('SELECT COUNT(*) AS n FROM authors WHERE name=?',array('Tito'))->fetch();
+		$this->assert_equals(array('n' => 1), $row);
+	}
 };
 ?>