Add optional models argument to autoupdate

lib/mysql.js

@@ -394,25 +394,38 @@ MySQL.prototype.all = function all(model, filter, callback) {
 
 };
 
-MySQL.prototype.autoupdate = function (cb) {
+MySQL.prototype.autoupdate = function (models, cb) {
     var self = this;
     var wait = 0;
-    Object.keys(this._models).forEach(function (model) {
+    if ((!cb) && ('function' === typeof models)) {
-        wait += 1;
+        cb = models;
-        self.query('SHOW FIELDS FROM ' + self.tableEscaped(model), function (err, fields) {
+        models = undefined;
-            self.query('SHOW INDEXES FROM ' + self.tableEscaped(model), function (err, indexes) {
+    }
-                if (!err && fields.length) {
+    // First argument is a model name
-                    self.alterTable(model, fields, indexes, done);
+    if ('string' === typeof models) {
-                } else {
+        models = [models];
-                    self.createTable(model, done);
+    }
-                }
+
+    models = models || Object.keys(this._models);
+
+    models.forEach(function (model) {
+        if (model in self._models) {
+            wait++;
+            self.query('SHOW FIELDS FROM ' + self.tableEscaped(model), function (err, fields) {
+                self.query('SHOW INDEXES FROM ' + self.tableEscaped(model), function (err, indexes) {
+                    if (!err && fields.length) {
+                        self.alterTable(model, fields, indexes, done);
+                    } else {
+                        self.createTable(model, done);
+                    }
+                });
             });
-        });
+        }
     });
 
     function done(err) {
         if (err) {
-            console.log(err);
+            console.error(err);
         }
         if (--wait === 0 && cb) {
             cb();