diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index d35e351..ac7345a 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -311,6 +311,19 @@
 	// --------------------------------------------------------------------
 
 	/**
+	 * Determines if a query is a "write" type.
+	 *
+	 * @param	string	An SQL query string
+	 * @return	bool
+	 */
+	public function is_write_type($sql)
+	{
+		return (bool) preg_match('/^\s*"?(SET|INSERT(?![^\)]+\)\s+RETURNING)|UPDATE|DELETE|REPLACE|CREATE|DROP|TRUNCATE|LOAD|COPY|ALTER|RENAME|GRANT|REVOKE|LOCK|UNLOCK|REINDEX)\s+/i', $sql);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * Platform-dependant string escape
 	 *
 	 * @param	string