fix limit default when undefined but offset is set

lib/dialects/abstract/query-generator.js

@@ -1765,7 +1765,7 @@ var QueryGenerator = {
   addLimitAndOffset: function(options, model) {
     var fragment = '';
     if (options.offset && !options.limit) {
-      fragment += ' LIMIT ' + this.escape(options.offset) + ', ' + 18440000000000000000;
+      fragment += ' LIMIT ' + this.escape(options.offset) + ', ' + 10000000000000;
     } else if (options.limit) {
       if (options.offset) {
         fragment += ' LIMIT ' + this.escape(options.offset) + ', ' + this.escape(options.limit);

test/integration/dialects/mysql/query-generator.test.js

@@ -332,7 +332,7 @@ if (Support.dialectIsMySQL()) {
         }, {
           title: 'uses default limit if only offset is specified',
           arguments: ['myTable', {offset: 2}],
-          expectation: 'SELECT * FROM `myTable` LIMIT 2, 18440000000000000000;',
+          expectation: 'SELECT * FROM `myTable` LIMIT 2, 10000000000000;',
           context: QueryGenerator
         }, {
           title: 'multiple where arguments',