@@ -166,6 +166,36 @@ gte - Greater Than Equals
166166ne - Not Equals
167167```
168168
169+ ## Updates
170+ 171+ Let's say we want to change a transactions payment method from credit card to account:
172+ 173+ ```
174+ >>> transactions.find_one({'account_id':'sns_03821023'})
175+ {u'account_id': u'sns_03821023', u'store_name': u'sportsmans', u'purchase_method': u'credit card', u'branch_name': u'tygervalley', u'products_purchased': [u'cricket bat', u'cricket ball', u'sports hat'], u'_id': ObjectId('5cb18881df585e003c976d5d'), u'total_costs': 109.2}```
176+ ```
177+ 178+ Update the purchase_method to account:
179+ 180+ ```
181+ >>> transactions.update( {'account_id': 'sns_03821023'}, {'$set': {'purchase_method': 'account'}})
182+ {'updatedExisting': True, u'nModified': 1, u'ok': 1.0, u'n': 1}
183+ ```
184+ 185+ Verify:
186+ 187+ ```
188+ >>> transactions.find_one({'account_id':'sns_03821023'})
189+ {u'account_id': u'sns_03821023', u'store_name': u'sportsmans', u'purchase_method': u'account', u'branch_name': u'tygervalley', u'products_purchased': [u'cricket bat', u'cricket ball', u'sports hat'], u'_id': ObjectId('5cb18881df585e003c976d5d'), u'total_costs': 109.2}
190+ ```
191+ 192+ This examples is only intended for a single document and mongodb only updates one document at a time. To update more than one at a time:
193+ 194+ ```
195+ transactions.update( {'k': 'v'}, {'$set': {'k': 'new_v'}},{multi:true})
196+ ```
197+ 198+ 169199### Filters
170200
171201Find all the documents with purchase price > 120:
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