Avoid fetching from database when only accessing primary key

src/index.js

@@ -156,10 +156,15 @@ module.exports = {
 				types: {
 					[typeName]: async function({ id }) {
 						let normalFields = fieldNames.map((name) => {
+							if (name === primaryKey) {
+								// No point making a trip to the database if all we need is an ID we already have
+								return [ name, id ];
+							} else {
 								return [ name, async (_, { dlayerKnexTable }) => {
 									let record = await dlayerKnexTable.load(id);
 									return record[name];
 								}];
+							}
 						});
 	
 						let relationFields = [];