黄龙龙 created SPARK-23212:
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Summary: 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
I want to casts the column to a different data type.
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