Created
May 21, 2012 14:48
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Limited Inventory
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| //Update if current | |
| db.inventory.insert({sku:'abc',qty:10}) | |
| db.inventory.update({sku:'abc'},{$set : {qty:10}}) | |
| p = db.inventory.findOne() | |
| db.inventory.update({sku:p.sku,qty:p.qty},{$inc : {qty : -1}}) | |
| db.getLastErrorObj() | |
| db.inventory.update({sku:p.sku,qty:p.qty},{$inc : {qty : -1}}) | |
| db.getLastErrorObj() | |
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