fix sqlite raw sql return datetime is string format

Also add sql change wiki: https://github.com/cnpm/cnpmjs.org/wiki/Migrating-from-1.x-to-2.x#sql-changes

docs/db.sql

@@ -162,7 +162,7 @@ CREATE TABLE IF NOT EXISTS `download_total` (
  UNIQUE KEY `date_name` (`date`, `name`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='module download total info';
 -- ALTER TABLE  `download_total` CHANGE  `name`  `name` VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT  'module name';
--- ALTER TABLE  `download_total` CHANGE  `date`  `date` datetime NOT NULL COMMENT 'YYYY-MM-DD format';
+-- ALTER TABLE  `download_total` CHANGE `date` `date` datetime NOT NULL COMMENT 'YYYY-MM-DD format';
 
 CREATE TABLE IF NOT EXISTS `module_deps` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT 'primary key',

services/download_total.js

@@ -34,6 +34,7 @@ exports.getModuleTotal = function* (name, start, end) {
 };
 
 exports.plusModuleTotal = function* (data) {
+  data.date = new Date(data.date);
   var row = yield DownloadTotal.find({
     where: {
       date: data.date,
@@ -64,10 +65,18 @@ exports.getTotal = function* (start, end) {
 
 function formatRows(rows) {
   return rows.map(function (row) {
+    var date = row.date;
+    if (typeof date === 'string') {
+      // sqlite raw datetime is string format ...
+      date = date.substring(0, 10);
+    } else {
+      // mysql return DateTime
+      date = moment(row.date).format('YYYY-MM-DD');
+    }
     return {
       name: row.name,
       count: row.count,
-      date: moment(row.date).format('YYYY-MM-DD'),
+      date: date,
     };
   });
 }