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Nesta página, explicamos como renomear, copiar, excluir ou manter colunas ao preparar dados no espaço de trabalho do Wrangler do Cloud Data Fusion Studio.
Renomear uma coluna
Para renomear uma coluna no espaço de trabalho do Wrangler, clique no nome da coluna e insira um novo nome. O Wrangler adiciona a diretiva rename ao roteiro.
Copiar uma coluna
Para entender o impacto do uso de uma nova diretiva em um conjunto de dados, copie uma coluna para uma nova coluna com um nome diferente e aplique as diretivas nela.
Na guia Dados, acesse o nome de uma coluna e clique na seta de expansão arrow_drop_down.
Selecione Copiar coluna e insira um nome para a nova coluna.
O Wrangler copia a coluna e adiciona a diretiva copy à receita.
Excluir uma coluna
Para conjuntos de dados com muitas colunas, é possível melhorar a performance do pipeline e economizar recursos excluindo colunas desnecessárias. Com menos colunas, a execução do pipeline é concluída mais rapidamente. Isso é especialmente verdadeiro para pipelines que incluem uma transformação do Joiner.
Para excluir uma coluna de um conjunto de dados, siga estas etapas:
[[["Fácil de entender","easyToUnderstand","thumb-up"],["Meu problema foi resolvido","solvedMyProblem","thumb-up"],["Outro","otherUp","thumb-up"]],[["Difícil de entender","hardToUnderstand","thumb-down"],["Informações incorretas ou exemplo de código","incorrectInformationOrSampleCode","thumb-down"],["Não contém as informações/amostras de que eu preciso","missingTheInformationSamplesINeed","thumb-down"],["Problema na tradução","translationIssue","thumb-down"],["Outro","otherDown","thumb-down"]],["Última atualização 2025-09-04 UTC."],[[["\u003cp\u003eThis guide details how to manage columns within the Cloud Data Fusion Wrangler workspace, including renaming, copying, deleting, and keeping columns.\u003c/p\u003e\n"],["\u003cp\u003eRenaming a column is done by clicking on the column name and entering the new one, which will add the \u003ccode\u003erename\u003c/code\u003e directive to the recipe.\u003c/p\u003e\n"],["\u003cp\u003eCopying a column involves using the "Copy column" option from the column's dropdown, which then allows you to apply directives to a duplicated column, adding the \u003ccode\u003ecopy\u003c/code\u003e directive to the recipe.\u003c/p\u003e\n"],["\u003cp\u003eDeleting a column is done via the "Delete column" option, reducing the dataset's size and improving pipeline efficiency, and this adds the \u003ccode\u003edrop\u003c/code\u003e directive to the recipe.\u003c/p\u003e\n"],["\u003cp\u003eThe "Keep column" feature deletes all columns except the selected one, making it possible to quickly isolate a single column, which adds the \u003ccode\u003ekeep\u003c/code\u003e directive to the recipe.\u003c/p\u003e\n"]]],[],null,["# Rename, copy, delete, or keep columns\n\nThis page explains how to rename, copy, delete, or keep columns when you prepare\ndata in the Wrangler workspace of the Cloud Data Fusion Studio.\n\nRename a column\n---------------\n\nTo rename a column in the Wrangler workspace, click a column name and enter a\nnew name. Wrangler adds the `rename` directive to the recipe.\n\nCopy a column\n-------------\n\nTo understand the impact of using a new directive on a dataset, you can copy a\ncolumn into a new column with a different name and apply directives there.\n\nTo copy a column, follow these steps:\n\n1. [Go to Wrangler workspace in Cloud Data Fusion](/data-fusion/docs/concepts/wrangler-overview#navigate-to-wrangler).\n2. On the **Data** tab, go to a column name and click the arrow_drop_down expander arrow.\n3. Select **Copy column** and enter a name for the new column.\n\nWrangler copies the column and adds the `copy` directive to the recipe.\n\nDelete a column\n---------------\n\nFor datasets with many columns, you can improve pipeline performance and save\nresources by deleting unnecessary columns. With fewer columns, the pipeline\nrun completes faster. This is especially true for pipelines that include a\nJoiner transformation.\n\nTo delete a column from a dataset, follow these steps:\n\n1. [Go to Wrangler workspace in Cloud Data Fusion](/data-fusion/docs/concepts/wrangler-overview#navigate-to-wrangler).\n2. On the **Data** tab, go to a column name and click the arrow_drop_down expander arrow.\n3. Select **Delete column**.\n\nWrangler deletes the column and adds the `drop` directive to the recipe.\n\nKeep a column\n-------------\n\nYou can keep a column in a dataset and delete all other columns.\n\nTo keep a column, follow these steps:\n\n1. [Go to Wrangler workspace in Cloud Data Fusion](/data-fusion/docs/concepts/wrangler-overview#navigate-to-wrangler).\n2. On the **Data** tab, go to a column name and click the arrow_drop_down expander arrow.\n3. Select **Keep column**.\n\nWrangler deletes all columns in the dataset, except the one you chose, and adds\nthe `keep` directive to the recipe.\n\nWhat's next\n-----------\n\n- Learn more about [Wrangler directives](/data-fusion/docs/concepts/wrangler-overview#apply_directives)."]]
