JSONCompactStringsEachRowWithNames

Documentação do formato JSONCompactStringsEachRowWithNames

Entrada	Saída	Alias
✔	✔

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Descrição

Diferencia-se do formato JSONCompactEachRow por também imprimir a linha de cabeçalho com os nomes das colunas, de modo semelhante ao formato TabSeparatedWithNames.

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Exemplo de uso

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Inserindo dados

Usando um arquivo JSON com os dados a seguir, chamado 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"]

Insira os dados:

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

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Leitura de dados

Leia os dados usando o formato JSONCompactStringsEachRowWithNames:

SELECT *
FROM football
FORMAT JSONCompactStringsEachRowWithNames

A saída será no formato 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"]

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Configurações de formato

Se a configuração input_format_with_names_use_header estiver definida como 1, as colunas dos dados de entrada serão mapeadas para as colunas da tabela com base em seus nomes, e colunas com nomes desconhecidos serão ignoradas se a configuração input_format_skip_unknown_fields estiver definida como 1. Caso contrário, a primeira linha será ignorada.