fixes #1358

lib/dialects/abstract/query-generator.js

@@ -915,6 +915,8 @@ module.exports = (function() {
         result = this.hashToWhereConditions(smth)
       } else if (typeof smth === "string") {
         result = smth
+      } else if (Buffer.isBuffer(smth)) {
+        result = this.escape(smth)
       } else if (Array.isArray(smth)) {
         var treatAsAnd = smth.reduce(function(treatAsAnd, arg) {
           if (treatAsAnd) {

lib/utils.js

@@ -180,7 +180,7 @@ var Utils = module.exports = {
             _where[i].in = _where[i].in || []
             _where[i].in.concat(where[i])
           }
-          else if (type === "object") {
+          else if (Utils.isHash(where[i])) {
             Object.keys(where[i]).forEach(function(ii) {
               logic = self.getWhereLogic(ii, where[i][ii]);
 
@@ -212,7 +212,7 @@ var Utils = module.exports = {
               }
             })
           }
-          else if (type === "string" || type === "number" || type === "boolean") {
+          else if (type === "string" || type === "number" || type === "boolean" || Buffer.isBuffer(where[i])) {
             _where[i].lazy = _where[i].lazy || {conditions: [], bindings: []}
             if (type === "boolean") {
               _where[i].lazy.conditions[_where[i].lazy.conditions.length] = '= ' + SqlString.escape(where[i], false, null, dialect) // sqlite is special
@@ -321,7 +321,7 @@ var Utils = module.exports = {
     }
   },
   isHash: function(obj) {
-    return Utils._.isObject(obj) && !Array.isArray(obj);
+    return Utils._.isObject(obj) && !Array.isArray(obj) && !Buffer.isBuffer(obj);
   },
   hasChanged: function(attrValue, value) {
     //If attribute value is Date, check value as a date