March 2025
Intermediate to advanced
244 pages
5h 42m
Portuguese (Portugal, Brazil)
Content preview from Análise de dados moderna no Excel
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Capítulo 3. Transformar linhas no Power Query
Este trabalho foi traduzido com recurso a IA. Agradecemos o teu feedback e comentários: translation-feedback@oreilly.com
O Capítulo 2 serviu para como uma introdução às capacidades do Power Query para acabar com mitos como ferramenta ETL para Excel. Neste e nos próximos capítulos da Parte I, terás a oportunidade de praticar com tarefas comuns de transformação de dados. O foco deste capítulo são as linhas.
A limpeza de dados envolve frequentemente tarefas de manipulação de linhas, tais como ordenação, filtragem e remoção de duplicados. O Excel tradicional oferece métodos orientados por interface para estas tarefas, mas podem ser complicados e difíceis de replicar. O Power Query oferece uma solução, permitindo um processo de limpeza de dados auditável e repetível sem codificação. Para seguir as demonstrações deste capítulo, acede a ch_03.xlsx na pasta ch_03 do repositório do livro.
Na folha de trabalho signups desta pasta de trabalho, o comité de planeamento de festas da tua organização tem estado a recolher RSVPs e pretende que a lista final seja ordenada alfabeticamente, eliminando duplicados, espaços em branco e erros de impressão. O comité está cansado de ordenar manualmente e remover linhas desnecessárias sempre que são adicionados novos dados. Deseja um livro que possa ser facilmente atualizado e reutilizado à medida que mais pessoas se registam ou que novas festas são programadas.
Carrega estes dados para o Power Query, nomeando ...
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