Add warning on long query names

Postgres has a 63 character limit on query names.  To avoid potential footgunning of users we'll log to their stderr if they use a longer query name.

For reference: brianc#772

Author: brianc

lib/connection.js

@@ -199,6 +199,11 @@ Connection.prototype.parse = function(query, more) {
 
   //normalize missing query names to allow for null
   query.name = query.name || '';
+  if (query.name.length > 63) {
+    console.error('Warning! Postgres only supports 63 characters for query names.');
+    console.error('You supplied', query.name, '(', query.name.length, ')');
+    console.error('This can cause conflicts and silent errors executing queries');
+  }
   //normalize null type array
   query.types = query.types || [];
   var len = query.types.length;