Pull namedPlaceholders from the correct location.

this.config.namedPlaceholders does not exist, you need this.config.connectionConfig.namedPlaceholders

Author: Twipped

lib/pool.js

@@ -126,7 +126,7 @@ Pool.prototype.end = function (cb) {
 
 Pool.prototype.query = function (sql, values, cb) {
   var cmdQuery = Connection.createQuery(sql, values, cb, this.config.connectionConfig);
-  cmdQuery.namedPlaceholders = this.config.namedPlaceholders;
+  cmdQuery.namedPlaceholders = this.config.connectionConfig.namedPlaceholders;
 
   this.getConnection(function (err, conn) {
     if (err) {
@@ -150,7 +150,7 @@ Pool.prototype.execute = function (sql, values, cb) {
     values = null;
   }
 
-  var useNamedPlaceholders = this.config.namedPlaceholders;
+  var useNamedPlaceholders = this.config.connectionConfig.namedPlaceholders;
 
   this.getConnection(function (err, conn) {
     if (err) {