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入力出力別名
✔✔JSONEachRow, JSONLines, NDJSON, JSONL

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概要

このフォーマットでは、ClickHouse は各行を独立した改行区切りのJSONオブジェクトとして出力します。 このフォーマットは、JSONEachRow、NDJSON (改行区切りJSON) 、または JSONL (JSONLines) とも呼ばれます。これらはすべて同じフォーマットの別名であり、相互に置き換えて使用できます。

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使用例

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データの挿入

次のデータを含む、football.json という名前のJSONファイルを使用します。 
{"date":"2022-04-30","season":2021,"home_team":"Sutton United","away_team":"Bradford City","home_team_goals":1,"away_team_goals":4}
{"date":"2022-04-30","season":2021,"home_team":"Swindon Town","away_team":"Barrow","home_team_goals":2,"away_team_goals":1}
{"date":"2022-04-30","season":2021,"home_team":"Tranmere Rovers","away_team":"Oldham Athletic","home_team_goals":2,"away_team_goals":0}
{"date":"2022-05-02","season":2021,"home_team":"Port Vale","away_team":"Newport County","home_team_goals":1,"away_team_goals":2}
{"date":"2022-05-02","season":2021,"home_team":"Salford City","away_team":"Mansfield Town","home_team_goals":2,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Barrow","away_team":"Northampton Town","home_team_goals":1,"away_team_goals":3}
{"date":"2022-05-07","season":2021,"home_team":"Bradford City","away_team":"Carlisle United","home_team_goals":2,"away_team_goals":0}
{"date":"2022-05-07","season":2021,"home_team":"Bristol Rovers","away_team":"Scunthorpe United","home_team_goals":7,"away_team_goals":0}
{"date":"2022-05-07","season":2021,"home_team":"Exeter City","away_team":"Port Vale","home_team_goals":0,"away_team_goals":1}
{"date":"2022-05-07","season":2021,"home_team":"Harrogate Town A.F.C.","away_team":"Sutton United","home_team_goals":0,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Hartlepool United","away_team":"Colchester United","home_team_goals":0,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Leyton Orient","away_team":"Tranmere Rovers","home_team_goals":0,"away_team_goals":1}
{"date":"2022-05-07","season":2021,"home_team":"Mansfield Town","away_team":"Forest Green Rovers","home_team_goals":2,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Newport County","away_team":"Rochdale","home_team_goals":0,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Oldham Athletic","away_team":"Crawley Town","home_team_goals":3,"away_team_goals":3}
{"date":"2022-05-07","season":2021,"home_team":"Stevenage Borough","away_team":"Salford City","home_team_goals":4,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Walsall","away_team":"Swindon Town","home_team_goals":0,"away_team_goals":3}
データを挿入します: 
INSERT INTO football FROM INFILE 'football.json' FORMAT JSONLines;

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データの読み込み

JSONLinesフォーマットを使用してデータを読み込みます。 
SELECT *
FROM football
FORMAT JSONLines
出力はJSONフォーマットです： 
{"date":"2022-04-30","season":2021,"home_team":"Sutton United","away_team":"Bradford City","home_team_goals":1,"away_team_goals":4}
{"date":"2022-04-30","season":2021,"home_team":"Swindon Town","away_team":"Barrow","home_team_goals":2,"away_team_goals":1}
{"date":"2022-04-30","season":2021,"home_team":"Tranmere Rovers","away_team":"Oldham Athletic","home_team_goals":2,"away_team_goals":0}
{"date":"2022-05-02","season":2021,"home_team":"Port Vale","away_team":"Newport County","home_team_goals":1,"away_team_goals":2}
{"date":"2022-05-02","season":2021,"home_team":"Salford City","away_team":"Mansfield Town","home_team_goals":2,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Barrow","away_team":"Northampton Town","home_team_goals":1,"away_team_goals":3}
{"date":"2022-05-07","season":2021,"home_team":"Bradford City","away_team":"Carlisle United","home_team_goals":2,"away_team_goals":0}
{"date":"2022-05-07","season":2021,"home_team":"Bristol Rovers","away_team":"Scunthorpe United","home_team_goals":7,"away_team_goals":0}
{"date":"2022-05-07","season":2021,"home_team":"Exeter City","away_team":"Port Vale","home_team_goals":0,"away_team_goals":1}
{"date":"2022-05-07","season":2021,"home_team":"Harrogate Town A.F.C.","away_team":"Sutton United","home_team_goals":0,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Hartlepool United","away_team":"Colchester United","home_team_goals":0,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Leyton Orient","away_team":"Tranmere Rovers","home_team_goals":0,"away_team_goals":1}
{"date":"2022-05-07","season":2021,"home_team":"Mansfield Town","away_team":"Forest Green Rovers","home_team_goals":2,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Newport County","away_team":"Rochdale","home_team_goals":0,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Oldham Athletic","away_team":"Crawley Town","home_team_goals":3,"away_team_goals":3}
{"date":"2022-05-07","season":2021,"home_team":"Stevenage Borough","away_team":"Salford City","home_team_goals":4,"away_team_goals":2}
{"date":"2022-05-07","season":2021,"home_team":"Walsall","away_team":"Swindon Town","home_team_goals":0,"away_team_goals":3}
名前が不明なカラムのインポートは、設定 input_format_skip_unknown_fields が 1 に設定されている場合、スキップされます。

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フォーマット設定

最終更新日 2026年6月10日