JSONCompactStringsEachRowWithNames

输入	输出	别名
✔	✔

描述

与 JSONCompactEachRow 格式的区别在于，它还会输出带列名的表头行，类似于 TabSeparatedWithNames 格式。

使用示例

插入数据

使用一个包含以下数据的 JSON 文件，并将其命名为 football.json：

["date", "season", "home_team", "away_team", "home_team_goals", "away_team_goals"]
["2022-04-30", "2021", "Sutton United", "Bradford City", "1", "4"]
["2022-04-30", "2021", "Swindon Town", "Barrow", "2", "1"]
["2022-04-30", "2021", "Tranmere Rovers", "Oldham Athletic", "2", "0"]
["2022-05-02", "2021", "Port Vale", "Newport County", "1", "2"]
["2022-05-02", "2021", "Salford City", "Mansfield Town", "2", "2"]
["2022-05-07", "2021", "Barrow", "Northampton Town", "1", "3"]
["2022-05-07", "2021", "Bradford City", "Carlisle United", "2", "0"]
["2022-05-07", "2021", "Bristol Rovers", "Scunthorpe United", "7", "0"]
["2022-05-07", "2021", "Exeter City", "Port Vale", "0", "1"]
["2022-05-07", "2021", "Harrogate Town A.F.C.", "Sutton United", "0", "2"]
["2022-05-07", "2021", "Hartlepool United", "Colchester United", "0", "2"]
["2022-05-07", "2021", "Leyton Orient", "Tranmere Rovers", "0", "1"]
["2022-05-07", "2021", "Mansfield Town", "Forest Green Rovers", "2", "2"]
["2022-05-07", "2021", "Newport County", "Rochdale", "0", "2"]
["2022-05-07", "2021", "Oldham Athletic", "Crawley Town", "3", "3"]
["2022-05-07", "2021", "Stevenage Borough", "Salford City", "4", "2"]
["2022-05-07", "2021", "Walsall", "Swindon Town", "0", "3"]

插入数据：

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

读取数据

以 JSONCompactStringsEachRowWithNames 格式读取数据：

SELECT *
FROM football
FORMAT JSONCompactStringsEachRowWithNames

输出将为 JSON 格式：

["date", "season", "home_team", "away_team", "home_team_goals", "away_team_goals"]
["2022-04-30", "2021", "Sutton United", "Bradford City", "1", "4"]
["2022-04-30", "2021", "Swindon Town", "Barrow", "2", "1"]
["2022-04-30", "2021", "Tranmere Rovers", "Oldham Athletic", "2", "0"]
["2022-05-02", "2021", "Port Vale", "Newport County", "1", "2"]
["2022-05-02", "2021", "Salford City", "Mansfield Town", "2", "2"]
["2022-05-07", "2021", "Barrow", "Northampton Town", "1", "3"]
["2022-05-07", "2021", "Bradford City", "Carlisle United", "2", "0"]
["2022-05-07", "2021", "Bristol Rovers", "Scunthorpe United", "7", "0"]
["2022-05-07", "2021", "Exeter City", "Port Vale", "0", "1"]
["2022-05-07", "2021", "Harrogate Town A.F.C.", "Sutton United", "0", "2"]
["2022-05-07", "2021", "Hartlepool United", "Colchester United", "0", "2"]
["2022-05-07", "2021", "Leyton Orient", "Tranmere Rovers", "0", "1"]
["2022-05-07", "2021", "Mansfield Town", "Forest Green Rovers", "2", "2"]
["2022-05-07", "2021", "Newport County", "Rochdale", "0", "2"]
["2022-05-07", "2021", "Oldham Athletic", "Crawley Town", "3", "3"]
["2022-05-07", "2021", "Stevenage Borough", "Salford City", "4", "2"]
["2022-05-07", "2021", "Walsall", "Swindon Town", "0", "3"]

格式设置

注意

如果将设置项 input_format_with_names_use_header 设为 1， 则输入数据中的列会按名称映射到表中的列；如果将设置项 input_format_skip_unknown_fields 设为 1，则名称未知的列会被跳过。 否则，第一行将被跳过。