Fixed MSSQL limit support

Author: iteufel

lib/dialects/mssql/index.js

@@ -10,7 +10,7 @@ var Dialect = module.exports = function(builder) {
 	BaseDialect.call(this, builder);
 
 	this.blocks.set('limit', function(params) {
-		return (params.offset) ? '' : 'TOP(' + builder._pushValue(params.limit) + ')';
+		return (!isNaN(params.offset)) ? '' : 'TOP(' + builder._pushValue(params.limit) + ')';
 	});
 
 	this.blocks.set('offset', function(params) {