Add milliseconds part when converting Date objects.

Author: Chaoran Yang

lib/protocol/SqlString.js

@@ -86,13 +86,14 @@ SqlString.dateToString = function(date, timeZone) {
   }
 
   var year   = dt.getFullYear();
-  var month  = zeroPad(dt.getMonth() + 1);
-  var day    = zeroPad(dt.getDate());
-  var hour   = zeroPad(dt.getHours());
-  var minute = zeroPad(dt.getMinutes());
-  var second = zeroPad(dt.getSeconds());
-
-  return year + '-' + month + '-' + day + ' ' + hour + ':' + minute + ':' + second;
+  var month  = zeroPad(dt.getMonth() + 1, 2);
+  var day    = zeroPad(dt.getDate(), 2);
+  var hour   = zeroPad(dt.getHours(), 2);
+  var minute = zeroPad(dt.getMinutes(), 2);
+  var second = zeroPad(dt.getSeconds(), 2);
+  var millisecond = zeroPad(dt.getMilliSeconds(), 3);
+
+  return year + '-' + month + '-' + day + ' ' + hour + ':' + minute + ':' + second + '.' + milliseconds;
 };
 
 SqlString.bufferToString = function(buffer) {
@@ -124,8 +125,13 @@ SqlString.objectToValues = function(object, timeZone) {
   return values.join(', ');
 };
 
-function zeroPad(number) {
-  return (number < 10) ? '0' + number : number;
+function zeroPad(number, length) {
+  number = number.toString();
+  while (number.length < length) {
+    number = '0' + number;
+  }
+
+  return number;
 }
 
 function convertTimezone(tz) {