TSKV - ClickHouse Documentation

Entrada	Saída	Alias
✔	✔

Descrição

Semelhante ao formato TabSeparated, mas gera a saída com um valor no formato name=value. Os nomes são escapados da mesma forma que no formato TabSeparated, e o símbolo = também é escapado.

SearchPhrase=   count()=8267016
SearchPhrase=bathroom interior design    count()=2166
SearchPhrase=clickhouse     count()=1655
SearchPhrase=2014 spring fashion    count()=1549
SearchPhrase=freeform photos       count()=1480
SearchPhrase=angelina jolie    count()=1245
SearchPhrase=omsk       count()=1112
SearchPhrase=photos of dog breeds    count()=1091
SearchPhrase=curtain designs        count()=1064
SearchPhrase=baku       count()=1000

Query

SELECT * FROM t_null FORMAT TSKV

Response

x=1    y=\N

Quando há um grande número de colunas pequenas, este formato é ineficiente, e geralmente não há motivo para usá-lo. Ainda assim, ele não é pior do que o formato JSONEachRow em termos de eficiência.

Na análise, os valores das diferentes colunas podem estar em qualquer ordem. É aceitável omitir alguns valores, pois eles são tratados como iguais aos respectivos valores padrão. Nesse caso, zeros e linhas em branco são usados como valores padrão. Valores complexos que poderiam ser especificados na tabela não são aceitos como padrão. A análise permite adicionar um campo extra tskv sem o sinal de igual nem um valor. Esse campo é ignorado. Durante a importação, colunas com nomes desconhecidos serão ignoradas, se a configuração input_format_skip_unknown_fields estiver definida como 1. NULL é formatado como \N.

Exemplo de uso

Inserção de dados

Usando o arquivo tskv a seguir, chamado football.tskv:

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

Insira os dados:

INSERT INTO football FROM INFILE 'football.tskv' FORMAT TSKV;

Leitura de dados

Leia dados usando o formato TSKV:

SELECT *
FROM football
FORMAT TSKV

A saída estará em formato delimitado por tabulação, com duas linhas de cabeçalho para nomes de colunas e tipos:

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

​Descrição

​Exemplo de uso

​Inserção de dados

​Leitura de dados

​Configurações do formato

Descrição

Exemplo de uso

Inserção de dados

Leitura de dados

Configurações do formato