added alias for updates

lib/dialects/mssql/query-generator.js

@@ -208,10 +208,11 @@ module.exports = (function() {
       for(var key in attributes){
       for(var key in attributes){
         //console.log(key);
         //console.log(key);
         //console.log('some more action', attributes.deletedAtThisTime);
         //console.log('some more action', attributes.deletedAtThisTime);
-        if(attributes[key].primaryKey && attrValueHash[key]){
-          delete attrValueHash[key];
+        var aliasKey = attributes[key].field || key;
+        if(attributes[key].primaryKey && attrValueHash[aliasKey]){
+          delete attrValueHash[aliasKey];
         }
         }
-        if(attrValueHash[key] && attrValueHash[key].fn){
+        if(attrValueHash[aliasKey] && attrValueHash[aliasKey].fn){
 
 
         }
         }
       }
       }