It works,thanks
在 2018-03-23 21:33:41，Anil Langote <[email protected]> 写道：
You have import functions
dataset.withColumn(columnName,functions.lit("constant"))
Thank you
Anil Langote
Sent from my iPhone
_____________________________
From: 崔苗 <[email protected]>
Sent: Friday, March 23, 2018 8:33 AM
Subject: how to use lit() in spark-java
To: <[email protected]>
Hi Guys,
I want to add a constant column to dataset by lit function in java, like that:
dataset.withColumn(columnName,lit("constant"))
but it's seems that idea coundn't found the lit() function,so how to use lit()
function in java?
thanks for any reply
