DEFAULT VALUES vs VALUES() on blank query

lib/dialects/abstract/dialect.js

@@ -5,7 +5,8 @@ var AbstractDialect = function() {
 AbstractDialect.prototype.supports = {
 	'RETURNING': false,
 	'DEFAULT': true,
-	'DEFAULT VALUES': false
+	'DEFAULT VALUES': false,
+	'VALUES ()': false
 }
 
 module.exports = AbstractDialect
\ No newline at end of file

lib/dialects/abstract/query-generator.js

@@ -115,6 +115,8 @@ module.exports = (function() {
 
       if (this._dialect.supports['DEFAULT VALUES']) {
         emptyQuery += " DEFAULT VALUES"
+      } else if (this._dialect.supports['VALUES ()']) {
+        emptyQuery += " VALUES ()"
       }
 
       if (this._dialect.supports['RETURNING']) {

lib/dialects/mysql.js

@@ -6,7 +6,7 @@ var MysqlDialect = function(sequelize) {
 }
 
 MysqlDialect.prototype.supports = _.extend(Abstract.prototype.supports, {
-
+	'VALUES ()': true
 })
 
 module.exports = MysqlDialect
\ No newline at end of file

test/associations/has-many.test.js

@@ -812,7 +812,7 @@ describe(Support.getTestDialectTeaser("HasMany"), function() {
             })
           })
 
-          it('should be able to add twice (second call result in UPDATE call) without any attributes (and timestamps off) on the through model', function (done) {
+          it.only('should be able to add twice (second call result in UPDATE call) without any attributes (and timestamps off) on the through model', function (done) {
             var Worker = this.sequelize.define('Worker', {}, {timestamps: false})
               , Task = this.sequelize.define('Task', {}, {timestamps: false})
               , WorkerTasks = this.sequelize.define('WorkerTasks', {}, {timestamps: false})