fix(transaction): postgres should not attempt to set autocommit off inside trans…

…action, is default and does not need to be set

lib/dialects/postgres/query-generator.js

@@ -910,6 +910,20 @@ module.exports = (function() {
      */
      */
     dropForeignKeyQuery: function(tableName, foreignKey) {
     dropForeignKeyQuery: function(tableName, foreignKey) {
       return 'ALTER TABLE ' + this.quoteTable(tableName) + ' DROP CONSTRAINT ' + this.quoteIdentifier(foreignKey) + ';';
       return 'ALTER TABLE ' + this.quoteTable(tableName) + ' DROP CONSTRAINT ' + this.quoteIdentifier(foreignKey) + ';';
+    },
+
+
+    setAutocommitQuery: function(value, options) {
+      if (options.parent) {
+        return;
+      }
+
+      // POSTGRES does not support setting AUTOCOMMIT = OFF
+      if (!value) {
+        return;
+      }
+
+      return AbstractQueryGenerator.setAutocommitQuery.call(this);
     }
     }
   };
   };