Hi,
Why are you doing the following two lines?
.select("id",lit(referenceFiltered))
.selectexpr(
"id"
)
What are you trying to achieve? What's lit and what's referenceFiltered?
What's the difference between select and selectexpr? Please start at
http://spark.apache.org/docs/latest/sql-programming-guide.html and then hop
onto
http://spark.apache.org/docs/latest/api/scala/index.html#org.apache.spark.package
to
know the Spark API better. I'm sure you'll quickly find out the answer(s).
Pozdrawiam,
Jacek Laskowski
----
https://about.me/JacekLaskowski
The Internals of Spark SQL https://bit.ly/spark-sql-internals
The Internals of Spark Structured Streaming
https://bit.ly/spark-structured-streaming
The Internals of Apache Kafka https://bit.ly/apache-kafka-internals
Follow me at https://twitter.com/jaceklaskowski
On Sat, Jun 8, 2019 at 12:53 PM anbutech <anbutec...@outlook.com> wrote:
> Thanks Jacek Laskowski Sir.but i didn't get the point here
>
> please advise the below one are you expecting:
>
> dataset1.as("t1)
>
> join(dataset3.as("t2"),
>
> col(t1.col1) === col(t2.col1), JOINTYPE.Inner )
>
> .join(dataset4.as("t3"), col(t3.col1) === col(t1.col1),
>
> JOINTYPE.Inner)
> .select("id",lit(referenceFiltered))
> .selectexpr(
> "id"
> )
>
>
>
> --
> Sent from: http://apache-spark-user-list.1001560.n3.nabble.com/
>
> ---------------------------------------------------------------------
> To unsubscribe e-mail: user-unsubscr...@spark.apache.org
>
>
