JSONLines
| 入力 | 出力 | 別名 |
|---|---|---|
| ✔ | ✔ | JSONEachRow, JSONLines, NDJSON, JSONL |
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。
この形式は JSONEachRow、NDJSON（Newline Delimited JSON）、または JSONL（JSONLines）としても知られています。これらの名称はすべて同じ形式の別名であり、区別なく使用できます。
使用例
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}
データを挿入する:
INSERT INTO football FROM INFILE 'football.json' FORMAT JSONLines;
データの読み取り
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 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}
列名が不明な列のインポートは、input_format_skip_unknown_fields 設定が 1 に設定されている場合、スキップされます。
