diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php
index 4cf4440..8e12a2d 100644
--- a/system/database/drivers/mssql/mssql_driver.php
+++ b/system/database/drivers/mssql/mssql_driver.php
@@ -430,16 +430,51 @@
 	 * @param	boolean	only affect the first word
 	 * @return	mixed	the item with backticks
 	 */	
-	function _protect_identifiers($item, $affect_spaces = TRUE, $first_word_only = FALSE)
+	function _protect_identifiers($item, $first_word_only = FALSE)
 	{
-		// MSSQL doesn't use backticks
-		if (strpos($item, '.') !== FALSE)
+		if (is_array($item))
 		{
-			$aliased_tables = implode(".",$this->ar_aliased_tables).'.';
-			$table_name =  substr($item, 0, strpos($item, '.')+1);
-			$item = (strpos($aliased_tables, $table_name) !== FALSE) ? $item = $item : $this->dbprefix.$item;
+			$escaped_array = array();
+
+			foreach($item as $k=>$v)
+			{
+				$escaped_array[$this->_protect_identifiers($k)] = $this->_protect_identifiers($v, $first_word_only);
+			}
+
+			return $escaped_array;
+		}	
+
+		// This function may get "item1 item2" as a string, and so
+		// we may need ""item1" "item2"" and not ""item1 item2""
+		if (ctype_alnum($item) === FALSE)
+		{
+			if (strpos($item, '.') !== FALSE)
+			{
+				$aliased_tables = implode(".",$this->ar_aliased_tables).'.';
+				$table_name =  substr($item, 0, strpos($item, '.')+1);
+				$item = (strpos($aliased_tables, $table_name) !== FALSE) ? $item = $item : $this->dbprefix.$item;
+			}
+
+			// This function may get "field >= 1", and need it to return ""field" >= 1"
+			$lbound = ($first_word_only === TRUE) ? '' : '|\s|\(';
+
+			$item = preg_replace('/(^'.$lbound.')([\w\d\-\_]+?)(\s|\)|$)/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;
 	}
 			
diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php
index b6d1cba..31c2711 100644
--- a/system/database/drivers/mysqli/mysqli_driver.php
+++ b/system/database/drivers/mysqli/mysqli_driver.php
@@ -96,7 +96,8 @@
 	 */
 	function db_set_charset($charset, $collation)
 	{
-		return @mysqli_query($this->conn_id, "SET NAMES '".$this->escape_str($charset)."' COLLATE '".$this->escape_str($collation)."'");
+		// TODO - add support if needed
+		return TRUE;
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
index 7aab37e..8f63c25 100644
--- a/system/database/drivers/oci8/oci8_driver.php
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -556,7 +556,7 @@
 		}	
 
 		// This function may get "item1 item2" as a string, and so
-		// we may need "`item1` `item2`" and not "`item1 item2`"
+		// we may need ""item1" "item2"" and not ""item1 item2""
 		if (ctype_alnum($item) === FALSE)
 		{
 			if (strpos($item, '.') !== FALSE)
@@ -566,14 +566,14 @@
 				$item = (strpos($aliased_tables, $table_name) !== FALSE) ? $item = $item : $this->dbprefix.$item;
 			}
 
-			// This function may get "field >= 1", and need it to return "`field` >= 1"
+			// This function may get "field >= 1", and need it to return ""field" >= 1"
 			$lbound = ($first_word_only === TRUE) ? '' : '|\s|\(';
 
-			$item = preg_replace('/(^'.$lbound.')([\w\d\-\_]+?)(\s|\)|$)/iS', '$1`$2`$3', $item);
+			$item = preg_replace('/(^'.$lbound.')([\w\d\-\_]+?)(\s|\)|$)/iS', '$1"$2"$3', $item);
 		}
 		else
 		{
-			return "`{$item}`";
+			return "\"{$item}\"";
 		}
 
 		$exceptions = array('AS', '/', '-', '%', '+', '*');
@@ -581,9 +581,9 @@
 		foreach ($exceptions as $exception)
 		{
 		
-			if (stristr($item, " `{$exception}` ") !== FALSE)
+			if (stristr($item, " \"{$exception}\" ") !== FALSE)
 			{
-				$item = preg_replace('/ `('.preg_quote($exception).')` /i', ' $1 ', $item);
+				$item = preg_replace('/ "('.preg_quote($exception).')" /i', ' $1 ', $item);
 			}
 		}
 		return $item;
@@ -608,7 +608,7 @@
 			$tables = array($tables);
 		}
 		
-		return '('.implode(', ', $tables).')';
+		return implode(', ', $tables);
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index cac0ecb..a32c37e 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -493,7 +493,7 @@
 			$tables = array($tables);
 		}
 		
-		return '('.implode(', ', $tables).')';
+		return implode(', ', $tables);
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/database/drivers/sqlite/sqlite_driver.php b/system/database/drivers/sqlite/sqlite_driver.php
index 5290ede..b6cb460 100644
--- a/system/database/drivers/sqlite/sqlite_driver.php
+++ b/system/database/drivers/sqlite/sqlite_driver.php
@@ -404,7 +404,7 @@
 	{
 		if (stristr($table, '.'))
 		{
-			$table = preg_replace("/\./", "`.`", $table);
+			$table = preg_replace("/\./", ".", $table);
 		}
 		
 		return $table;
@@ -437,7 +437,7 @@
 		}	
 
 		// This function may get "item1 item2" as a string, and so
-		// we may need "`item1` `item2`" and not "`item1 item2`"
+		// we may need "item1 item2" and not "item1 item2"
 		if (ctype_alnum($item) === FALSE)
 		{
 			if (strpos($item, '.') !== FALSE)
@@ -447,14 +447,14 @@
 				$item = (strpos($aliased_tables, $table_name) !== FALSE) ? $item = $item : $this->dbprefix.$item;
 			}
 
-			// This function may get "field >= 1", and need it to return "`field` >= 1"
+			// This function may get "field >= 1", and need it to return "field >= 1"
 			$lbound = ($first_word_only === TRUE) ? '' : '|\s|\(';
 
-			$item = preg_replace('/(^'.$lbound.')([\w\d\-\_]+?)(\s|\)|$)/iS', '$1`$2`$3', $item);
+			$item = preg_replace('/(^'.$lbound.')([\w\d\-\_]+?)(\s|\)|$)/iS', '$1$2$3', $item);
 		}
 		else
 		{
-			return "`{$item}`";
+			return "{$item}";
 		}
 
 		$exceptions = array('AS', '/', '-', '%', '+', '*');
@@ -462,9 +462,9 @@
 		foreach ($exceptions as $exception)
 		{
 		
-			if (stristr($item, " `{$exception}` ") !== FALSE)
+			if (stristr($item, " {$exception} ") !== FALSE)
 			{
-				$item = preg_replace('/ `('.preg_quote($exception).')` /i', ' $1 ', $item);
+				$item = preg_replace('/ ('.preg_quote($exception).') /i', ' $1 ', $item);
 			}
 		}
 		return $item;