JSONEachRow

入力	出力	エイリアス
✔	✔	JSONLines, NDJSON

説明

この形式では、ClickHouse は各行を改行区切りの個別の JSON オブジェクトとして出力します。

使用例

データの挿入

次のデータを含む JSON ファイル football.json を用意します：

{"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}

データを挿入する:

INSERT INTO football FROM INFILE 'football.json' FORMAT JSONEachRow;

データの読み取り

JSONEachRow 形式を使ってデータを読み込みます。

SELECT *
FROM football
FORMAT JSONEachRow

出力は JSON 形式です：

{"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}

input_format_skip_unknown_fields 設定が 1 に設定されている場合、不明な名前のデータ列のインポートはスキップされます。

書式設定