diff --git a/lib/mysql.js b/lib/mysql.js
index 3400e53..1fe3d1b 100644
--- a/lib/mysql.js
+++ b/lib/mysql.js
@@ -31,9 +31,7 @@ exports.initialize = function initializeDataSource(dataSource, callback) {
     s.supportBigNumbers = (s.supportBigNumbers || false);
     s.timezone = (s.timezone || 'local');
 
-    if(isNaN(s.connectionLimit)) {
-        s.connectionLimit = s.connectionLimit;
-    } else {
+    if(!isNaN(s.connectionLimit)) {
         s.connectionLimit = 10;
     }
 
@@ -473,7 +471,7 @@ MySQL.prototype.all = function all(model, filter, callback) {
     if (!filter.order) {
         var idNames = this.idNames(model);
         if (idNames && idNames.length) {
-            filter.order = idNames.join(' ');
+            filter.order = idNames;
         }
     }
 
diff --git a/test/mysql.discover.test.js b/test/mysql.discover.test.js
index b39b983..0e0125b 100644
--- a/test/mysql.discover.test.js
+++ b/test/mysql.discover.test.js
@@ -7,6 +7,7 @@ var db;
 
 before(function() {
     var config = require('rc')('loopback', {dev: {mysql: {}}}).dev.mysql;
+    config.database = 'STRONGLOOP';
     db = new DataSource(require('../'), config);
 });
 
@@ -192,3 +193,28 @@ describe('Discover LDL schema from a table', function () {
         });
     });
 });
+
+describe('Discover and build models', function () {
+  it('should discover and build models', function (done) {
+    db.discoverAndBuildModels('INVENTORY', {owner: 'STRONGLOOP', visited: {}, associations: true}, function (err, models) {
+      assert(models.Inventory, 'Inventory model should be discovered and built');
+      var schema = models.Inventory.definition;
+      assert(schema.settings.mysql.schema === 'STRONGLOOP');
+      assert(schema.settings.mysql.table === 'INVENTORY');
+      assert(schema.properties.productId);
+      assert(schema.properties.productId.type === String);
+      assert(schema.properties.productId.mysql.columnName === 'PRODUCT_ID');
+      assert(schema.properties.locationId);
+      assert(schema.properties.locationId.type === String);
+      assert(schema.properties.locationId.mysql.columnName === 'LOCATION_ID');
+      assert(schema.properties.available);
+      assert(schema.properties.available.type === Number);
+      assert(schema.properties.total);
+      assert(schema.properties.total.type === Number);
+      models.Inventory.findOne(function (err, inv) {
+        assert(!err, 'error should not be reported');
+        done();
+      });
+    });
+  });
+});