diff --git a/lib/discovery.js b/lib/discovery.js
index a3c2bf0..087cbab 100644
--- a/lib/discovery.js
+++ b/lib/discovery.js
@@ -319,7 +319,7 @@ function mixinDiscovery(MySQL) {
         } else {
           return 'String';
         }
-
+        break;
       case 'VARCHAR':
       case 'TINYTEXT':
       case 'MEDIUMTEXT':
@@ -343,6 +343,7 @@ function mixinDiscovery(MySQL) {
       case 'YEAR':
       case 'FLOAT':
       case 'DOUBLE':
+      case 'BIGINT':
         return 'Number';
       case 'DATE':
       case 'TIMESTAMP':
diff --git a/lib/mysql.js b/lib/mysql.js
index 7033a80..26abaf5 100644
--- a/lib/mysql.js
+++ b/lib/mysql.js
@@ -304,7 +304,12 @@ MySQL.prototype.toDatabase = function (prop, val) {
   if (prop.type.name === 'GeoPoint') {
     return val ? 'Point(' + val.lat + ',' + val.lng + ')' : 'NULL';
   }
-  if (typeof prop.type === 'function') return this.client.escape(prop.type(val));
+  if (prop.type === Object) {
+    return this.client.escape(val);
+  }
+  if (typeof prop.type === 'function') {
+    return this.client.escape(prop.type(val));
+  }
   return this.client.escape(val.toString());
 };
 
@@ -544,10 +549,10 @@ MySQL.prototype.destroyAll = function destroyAll(model, where, callback) {
     where = undefined;
   }
   this.query('DELETE  FROM '
-    + this.tableEscaped(model) + ' ' + this.buildWhere(model, where || {}),
+      + this.tableEscaped(model) + ' ' + this.buildWhere(model, where || {}),
     function (err, data) {
       callback && callback(err, data);
-  }.bind(this));
+    }.bind(this));
 };
 
 /**
@@ -962,8 +967,12 @@ function stringOptionsByType(p, dt) {
   switch (dt.toLowerCase()) {
     default:
     case 'varchar':
+      var len = p.limit || ((p.type !== String) ? 32768 : 1024);
+      dt += '(' + len + ')';
+      break;
     case 'char':
-      dt += '(' + (p.limit || 255) + ')';
+      len = p.limit || 255;
+      dt += '(' + len + ')';
       break;
 
     case 'text':
diff --git a/test/datatypes.test.js b/test/datatypes.test.js
index 71673b7..c754ae7 100644
--- a/test/datatypes.test.js
+++ b/test/datatypes.test.js
@@ -49,6 +49,24 @@ describe('MySQL specific datatypes', function () {
     });
   });
 
+  it('should create a model instance with object/json types', function (done) {
+    var note = {a: 1, b: '2'};
+    var extras = {c: 3, d: '4'};
+    var em = EnumModel.create({animal: ANIMAL_ENUM.DOG, condition: 'sleepy',
+      mood: 'happy', note: note, extras: extras}, function (err, obj) {
+      assert.ok(!err);
+      assert.equal(obj.condition, 'sleepy');
+      EnumModel.findOne({where: {animal: ANIMAL_ENUM.DOG}}, function (err, found) {
+        assert.ok(!err);
+        assert.equal(found.mood, 'happy');
+        assert.equal(found.animal, ANIMAL_ENUM.DOG);
+        assert.deepEqual(found.note, note);
+        assert.deepEqual(found.extras, extras);
+        done();
+      });
+    });
+  });
+
   it('should disconnect when done', function (done) {
     db.disconnect();
     done()
@@ -67,7 +85,9 @@ function setup(done) {
   EnumModel = db.define('EnumModel', {
     animal: { type: ANIMAL_ENUM, null: false },
     condition: { type: db.EnumFactory('hungry', 'sleepy', 'thirsty') },
-    mood: { type: db.EnumFactory('angry', 'happy', 'sad') }
+    mood: { type: db.EnumFactory('angry', 'happy', 'sad') },
+    note: Object,
+    extras: 'JSON'
   });
 
   blankDatabase(db, done);