From 9c585a0411f9adf4ec36b4a3bd1082bec0e6e679 Mon Sep 17 00:00:00 2001
From: Louis Chatriot <louis.chatriot@gmail.com>
Date: Thu, 23 May 2013 18:20:49 +0300
Subject: [PATCH] Update README.md

---
 README.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/README.md b/README.md
index 1130a82..b1be51f 100644
--- a/README.md
+++ b/README.md
@@ -103,10 +103,23 @@ db.find({ satellites: 'Phobos' }, function (err, docs) {
 
 // You can use comparison operators $lt (less than), $lte (less than or equal),
 // $gt (greater than) and $gte (greater than or equal)
+// They work on numbers and strings (lexicographical order in that case)
 db.find({ "humans.genders": { $gt: 5 } }, function (err, docs) {
   // docs contains Omicron Persei 8, whose humans have more than 5 genders (7).
 });
 
+// You can use logical operator $or and $and ($and is the same
+// as just using a normal query object)
+// Syntax is { $logicalOperator: [query1, query2, ...] }
+db.find({ $or: [{ planet: 'Earth' }, { planet: 'Mars' }] }, function (err, docs) {
+  // docs contains Earth and Mars
+});
+
+// You can mix normal queries, comparison queries and logical operators
+db.find({ $or: [{ planet: 'Earth' }, { planet: 'Mars' }], inhabited: true }, function (err, docs) {
+  // docs contains Earth
+});
+
 // Find all documents in the collection
 db.find({}, function (err, docs) {
 });