- Fixed a bug occuring when a field was already escaped

src/Adapter/MsSQL.php

@@ -193,7 +193,7 @@ class MsSQL implements AdapterInterface {
             case static::IDENTIFIER_DATABASE:
             case static::IDENTIFIER_TABLE:
             case static::IDENTIFIER_FIELD:
-                return "[" . str_replace(["[", "]"], [ "[[", "]]" ], $segment) . "]";
+                return "[" . trim(str_replace(["[", "]"], [ "[[", "]]" ], $segment), '[]') . "]";
 
             case static::IDENTIFIER_VALUE:
                 return "'$segment'";