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// suggested shell cmd line to run this: | |
// | |
// mongo --shell example2.js | |
// | |
// Note: the { out : … } parameter is for mongodb 1.8+ | |
db.things.insert( { _id : 1, tags : ['dog', 'cat'] } ); | |
db.things.insert( { _id : 2, tags : ['cat'] } ); | |
db.things.insert( { _id : 3, tags : ['mouse', 'cat', 'dog'] } ); | |
db.things.insert( { _id : 4, tags : [] } ); |