Set standard_confirming_strings=on on connection in postgres. Closes #3545

changelog.md

+# Next
+- [BUG] Enable standards conforming strings on connection in postgres. Adresses [#3545](https://github.com/sequelize/sequelize/issues/3545)
+
 # 2.0.6
 # 2.0.6
 - [BUG] Don't update virtual attributes in Model.update. Fixes [#2860](https://github.com/sequelize/sequelize/issues/2860)
 - [BUG] Don't update virtual attributes in Model.update. Fixes [#2860](https://github.com/sequelize/sequelize/issues/2860)
 - [BUG] Fix for newlines in hstore [#3383](https://github.com/sequelize/sequelize/issues/3383)
 - [BUG] Fix for newlines in hstore [#3383](https://github.com/sequelize/sequelize/issues/3383)

lib/dialects/postgres/connection-manager.js

@@ -94,9 +94,15 @@ ConnectionManager.prototype.connect = function(config) {
       connection._invalid = true;
       connection._invalid = true;
     });
     });
   }).tap(function (connection) {
   }).tap(function (connection) {
-    if (self.sequelize.config.keepDefaultTimezone) return;
+    // Disable escape characters in strings, see https://github.com/sequelize/sequelize/issues/3545
+    var query = 'SET standard_conforming_strings=on;';
+
+    if (!self.sequelize.config.keepDefaultTimezone) {
+      query += 'SET client_min_messages TO warning; SET TIME ZONE INTERVAL \'' + self.sequelize.options.timezone + '\' HOUR TO MINUTE';
+    }
+
     return new Promise(function (resolve, reject) {
     return new Promise(function (resolve, reject) {
-      connection.query('SET client_min_messages TO warning; SET TIME ZONE INTERVAL \'' + self.sequelize.options.timezone + '\' HOUR TO MINUTE').on('error', function (err) {
+      connection.query(query).on('error', function (err) {
         reject(err);
         reject(err);
       }).on('end', function () {
       }).on('end', function () {
         resolve();
         resolve();