[ci skip] DocBlocks for DB drivers' driver classes
Partially fixes issue #1295.
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index 497f8b9..39db161 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -306,6 +306,13 @@
protected $_reserved_identifiers = array('*');
/**
+ * Identifier escape character
+ *
+ * @var string
+ */
+ protected $_escape_char = '"';
+
+ /**
* ESCAPE statement string
*
* @var string
@@ -320,6 +327,13 @@
protected $_like_escape_chr = '!';
/**
+ * ORDER BY random keyword
+ *
+ * @var string
+ */
+ protected $_random_keyword = ' RAND()';
+
+ /**
* COUNT string
*
* @used-by CI_DB_driver::count_all()