postgres requires empty array to be explicitly cast on update

lib/dialects/postgres/query-generator.js

@@ -382,7 +382,7 @@ module.exports = (function() {
       return Utils._.template(query)(replacements)
     },
 
-    updateQuery: function(tableName, attrValueHash, where, options) {
+    updateQuery: function(tableName, attrValueHash, where, options, attributes) {
       attrValueHash = Utils.removeNullValuesFromHash(attrValueHash, this.options.omitNull, options)
 
       var query  = "UPDATE <%= table %> SET <%= values %> WHERE <%= where %> RETURNING *"
@@ -390,7 +390,7 @@ module.exports = (function() {
 
       for (var key in attrValueHash) {
         var value = attrValueHash[key]
-        values.push(this.quoteIdentifier(key) + "=" + this.escape(value))
+        values.push(this.quoteIdentifier(key) + "=" + this.escape(value, (!!attributes && !!attributes[key] ? attributes[key] : undefined)))
       }
 
       var replacements = {

lib/query-interface.js

@@ -417,7 +417,7 @@ module.exports = (function() {
   QueryInterface.prototype.update = function(dao, tableName, values, identifier, options) {
     var self = this
       , restrict = false
-      , sql = self.QueryGenerator.updateQuery(tableName, values, identifier, options)
+      , sql = self.QueryGenerator.updateQuery(tableName, values, identifier, options, dao.daoFactory.rawAttributes)
 
     // Check for a restrict field
     if (!!dao.daoFactory && !!dao.daoFactory.associations) {