From 3905973d5e7316cfee7d0b8182e308cf9b1f48f3 Mon Sep 17 00:00:00 2001
From: Thomas Hambach <t.hambach@gmail.com>
Date: Mon, 7 Sep 2015 10:47:06 +0800
Subject: [PATCH] Added flag to allow unicode strings

https://github.com/sequelize/sequelize/issues/3752
---
 lib/dialects/mssql/query-generator.js | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/lib/dialects/mssql/query-generator.js b/lib/dialects/mssql/query-generator.js
index 94971256a8f7..5d9e10e4a330 100644
--- a/lib/dialects/mssql/query-generator.js
+++ b/lib/dialects/mssql/query-generator.js
@@ -4,7 +4,8 @@
 var Utils = require('../../utils')
   , DataTypes = require('../../data-types')
   , Model = require('../../model')
-  , AbstractQueryGenerator = require('../abstract/query-generator');
+  , AbstractQueryGenerator = require('../abstract/query-generator')
+  , SqlString = require('../../sql-string');
 
 /* istanbul ignore next */
 var throwMethodUndefined = function(methodName) {
@@ -603,7 +604,27 @@ var QueryGenerator = {
 
   booleanValue: function(value) {
     return !!value ? 1 : 0;
+  },
+  
+  escape: function(value, field) {
+    if (value && value._isSequelizeMethod) {
+      return this.handleSequelizeMethod(value);
+    } else {
+      if (field && field.type && value) {
+        if (field.type.validate) {
+          field.type.validate(value);
+        }
+      }
+
+      var escaped = SqlString.escape(value, false, this.options.timezone, this.dialect, field);
+      if (typeof value === "string" && (!field || field.type instanceof DataTypes.STRING)) {
+        return 'N' + escaped;
+      }
+      return escaped;
+
+    }
   }
+  
 };
 
 // private methods