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https://issues.apache.org/jira/browse/SPARK-23212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marco Gaido resolved SPARK-23212.
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Resolution: Invalid
This is not the right place. For questions, please use the user mailing list,
as [https://spark.apache.org/community.html] describes.
> Casts the column to a different data type.
> -------------------------------------------
>
> Key: SPARK-23212
> URL: https://issues.apache.org/jira/browse/SPARK-23212
> Project: Spark
> Issue Type: Question
> Components: SparkR
> Affects Versions: 2.1.0
> Environment: I want to casts the column to a different data type.
>
> {code:R}
> train_data <- loadDF("./resultFile/train_data",
> "csv",
> header = TRUE)
> train_data$x1 <- cast(train_data$x1, "double")
> train_data$x2 <- cast(train_data$x2, "double")
> train_data$x3 <- cast(train_data$x3, "double")
> train_data$x4 <- cast(train_data$x4, "double")
> {code}
>
> But my dataset has so many columns need to be cast,is there exist a
> convenient way to do it?
> Reporter: 黄龙龙
> Priority: Major
> Labels: usability
>
> I want to casts the column to a different data type.
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