use nested tables for mysql queries + throw additional data away if there was on…

…ly one selected table

lib/dialects/mysql/query.js

@@ -37,12 +37,16 @@ module.exports = (function() {
       this.options.logging('Executing: ' + this.sql)
     }
 
-    this.client.query(this.sql, function(err, results, fields) {
+    this.client.query({ sql: this.sql, nestTables: true }, function(err, results, fields) {
       self.emit('sql', self.sql)
 
       if (err) {
         onFailure.call(self, err)
       } else {
+        if (Array.isArray(results) && !!results[0] && Utils._.keys(results[0]).length === 1) {
+          results = results.map(function(result){ return Utils._.values(result)[0] })
+        }
+
         onSuccess.call(self, results, fields)
       }
     }).setMaxListeners(100)