made MySQL/MySQLi forge use explicitly named KEYs, added ability to specify multi-column non-primary keys in table creation

1 files changed, 12 insertions, 4 deletions

diff --git a/system/database/drivers/mssql/mssql_forge.php b/system/database/drivers/mssql/mssql_forge.php
index ddd1bb6ae..6995d3422 100644
--- a/system/database/drivers/mssql/mssql_forge.php
+++ b/system/database/drivers/mssql/mssql_forge.php
@@ -147,16 +147,24 @@ class CI_DB_mssql_forge extends CI_DB_forge {
 			$primary_keys = $this->db->_protect_identifiers($primary_keys);

 			$sql .= ",\n\tPRIMARY KEY (" . implode(', ', $primary_keys) . ")";

 		}

-

+		

 		if (is_array($keys) && count($keys) > 0)

 		{

-			$keys = $this->db->_protect_identifiers($keys);

 			foreach ($keys as $key)

 			{

-				$sql .= ",\n\tFOREIGN KEY ($key)";

+				if (is_array($key))

+				{

+					$key = $this->db->_protect_identifiers($key);	

+				}

+				else

+				{

+					$key = array($this->db->_protect_identifiers($key));

+				}

+				

+				$sql .= ",\n\tFOREIGN KEY (" . implode(', ', $key) . ")";

 			}

 		}

-

+		

 		$sql .= "\n)";

 

 		return $sql;