diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
index 6d3b722..160a56d 100644
--- a/system/database/drivers/oci8/oci8_driver.php
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -557,27 +557,28 @@
// This function may get "item1 item2" as a string, and so
// we may need "`item1` `item2`" and not "`item1 item2`"
- if (strpos($item, ' ') !== FALSE)
+ if (ctype_alnum($item) === FALSE)
{
// This function may get "field >= 1", and need it to return "`field` >= 1"
- if ($first_word_only === TRUE)
- {
- return '`'.preg_replace('/ /', '` ', $item, 1);
- }
+ $lbound = ($first_word_only === TRUE) ? '' : '|\s|\(';
- $item = preg_replace('/(^|\s|\()([\w\d\-\_]+?)(\s|\)|$)/iS', '$1`$2`$3', $item);
+ $item = preg_replace('/(^'.$lbound.')([\w\d\-\_]+?)(\s|\)|$)/iS', '$1`$2`$3', $item);
+ }
+ else
+ {
+ return "`{$item}`";
}
$exceptions = array('AS', '/', '-', '%', '+', '*');
foreach ($exceptions as $exception)
{
+
if (stristr($item, " `{$exception}` ") !== FALSE)
{
$item = preg_replace('/ `('.preg_quote($exception).')` /i', ' $1 ', $item);
}
}
-
return $item;
}