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FireStore上のドキュメントをorderbyでソートする時、ソート対象フィールドがdocumentに無いと結果に入らない

Posted at

ちょっと嵌ったので。備忘も兼ねて

db.collections('hoge').orderBy('fuga').get().then(query => {
  query.forEach(doc => {
     //fuga fieldを持っていないドキュメントはそもそも入らない
  })
})

まぁ公式にきちんと書いてあるんですが。

教訓

スキーマレスでもこういうところは気を付けましょう。

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