Page 360 - Nodejs 교과서 개정2판

ކҊ٣࠺ীࢲ OR ো࢑਷ $orܳ ࢎਊ೤פ׮ ageо 30 ୡҗ੉Ѣա marriedо falseੋ ׮௸ݢ౟ܳ ઑഥ೧ࠁѷण

פ׮ $orী ઱য૓ ߓৌ উ੄ ઑѤٜਸ ೞաۄب ݅઒ೞח ׮௸ݢ౟ܳ ݽف ଺णפ׮

콘솔

> db.users.find({ $or: [{ age: { $gt: 30 } }, { married: false }] }, { _id: 0, name: 1, age: 1});
{ "name" : "zero", "age" : 24 }
{ "name" : "nero", "age" : 32 }

੿۳ب оמ೤פ׮ sort ݫࢲ٘ܳ ࢎਊೞݶ ؾפ׮ ա੉о ݆਷ ࣽࢲ؀۽ ੿۳೧ࠁѷणפ׮ 1਷ ղܿରࣽ 1
਷ য়ܴରࣽ੉޲۽ 1ਸ ࢎਊ೤פ׮

콘솔
> db.users.find({}, { _id: 0, name: 1, age: 1 }).sort({ age: -1 })
{ "name" : "nero", "age" : 32 }
{ "name" : "zero", "age" : 24 }

ઑഥೡ ׮௸ݢ౟ ѐࣻܳ ࢸ੿ೡ ࣻب ੓णפ׮ limit ݫࢲ٘ܳ ࢎਊ೤פ׮

콘솔
> db.users.find({}, { _id: 0, name: 1, age: 1}).sort({ age: -1 }).limit(1)
{ "name" : "nero", "age" : 32 }

׮௸ݢ౟ ѐࣻܳ ࢸ੿ೞݶࢲ ݻ ѐܳ Ѥցڬ૑ ࢸ੿ೡ ࣻب ੓णפ׮ TLJQ ݫࢲ٘ܳ ࢎਊ೤פ׮

콘솔
> db.users.find({}, { _id: 0, name: 1, age: 1 }).sort({ age: -1 }).limit(1).skip(1)
{ "name" : "zero", "age" : 24 }

੉৻ীب ݆਷ ௪ܻо ੓૑݅ ੉ ੿ب݅ ঌݶ খਵ۽੄ ৘ઁܳ ҳഅೞӝী ୽࠙೤פ׮

/PUF ™ ஹಌझ ࢎਊ द

ஹಌझܳ ࢎਊೞݶ ؘ੉ఠܳ ઑഥೞӝ औणפ׮ ೧׼ ஸ۩࣌ਸ ௿ܼೞݶ ؘ੉ఠо ಴दؾפ׮ ઑѤਸ ઱۰ݶ '*-5&3 ࠗ࠙ਸ
੉ਊೞݶ ؾפ׮