fix a postgre escape error
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 34d76de..96cf2df 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -451,7 +451,7 @@
 		}

 		else

 		{

-			return ""{$item}"";

+			return "\"{$item}\"";

 		}

 

 		$exceptions = array('AS', '/', '-', '%', '+', '*');

@@ -459,7 +459,7 @@
 		foreach ($exceptions as $exception)

 		{

 		

-			if (stristr($item, " "{$exception}" ") !== FALSE)

+			if (stristr($item, " \"{$exception}\" ") !== FALSE)

 			{

 				$item = preg_replace('/ "('.preg_quote($exception).')" /i', ' $1 ', $item);

 			}