Hi ,try this way
val df = sales_demand.join(product_master,sales_demand("INVENTORY_ITEM_ID") ===
product_master("INVENTORY_ITEM_ID"),"inner")
> 在 2016年8月30日，下午5:52，Jacek Laskowski <ja...@japila.pl> 写道：
>
> Hi Mich,
>
> This is the first time I've been told about $ for string interpolation (as
> the function not the placeholder). Thanks for letting me know about it!
>
> What is often used is s"whatever you want to reference inside the string
> $-prefix unless it is a complex expression" i.e.
>
> scala> s"I'm using $spark in ${spark.version}"
> res0: String = I'm using org.apache.spark.sql.SparkSession@1fc1c7e in
> 2.1.0-SNAPSHOT
>
>
> Pozdrawiam,
> Jacek Laskowski
> ----
> https://medium.com/@jaceklaskowski/ <https://medium.com/@jaceklaskowski/>
> Mastering Apache Spark 2.0 http://bit.ly/mastering-apache-spark
> <http://bit.ly/mastering-apache-spark>
> Follow me at https://twitter.com/jaceklaskowski
> <https://twitter.com/jaceklaskowski>
> On Tue, Aug 30, 2016 at 10:27 AM, Mich Talebzadeh <mich.talebza...@gmail.com
> <mailto:mich.talebza...@gmail.com>> wrote:
> Actually I doubled checked this ‘s’ String Interpolator
>
> In Scala
>
> scala> val chars = "This is Scala"
> chars: String = This is Scala
> scala> println($"$chars")
> This is Scala
>
> OK so far fine. In shell (ksh) can do
>
> chars="This is Scala"
> print "$chars"
> This is Scala
>
> In Shell
>
> print "$charsand it is interesting"
> it is interesting
>
> Have a problem with interpretation!
>
> This will work by using {} brackers
>
> print "${chars} and it is interesting"
> This is Scala and it is interesting
>
>
> In Scala
>
> println($"$charsand it is interesting")
> <console>:24: error: not found: value charsand
> println($"$charsand it is interesting")
>
> Likewise shell this will work by deploying the brackets {}
> println($"${chars} and it is interesting")
> This is Scala and it is interesting
>
> So I presume it is best practice to use ${} in Scala like shell? Although in
> most cases $VALUE should work.
>
>
> Cheers
>
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> Dr Mich Talebzadeh
>
> LinkedIn
> https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw
>
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>
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>
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>
>
> On 28 August 2016 at 09:25, Mich Talebzadeh <mich.talebza...@gmail.com
> <mailto:mich.talebza...@gmail.com>> wrote:
> Yes I realised that. Actually I thought it was s not $. it has been around in
> shell for years say for actual values --> ${LOG_FILE}, for position 's/ etc
>
>
> cat ${LOG_FILE} | egrep -v 'rows affected|return status|&&&' | sed -e 's/^[
> ]*//g' -e 's/^ //g' -e '/^$/d' > temp.out
>
>
> Dr Mich Talebzadeh
>
> LinkedIn
> https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw
>
> <https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw>
>
> http://talebzadehmich.wordpress.com <http://talebzadehmich.wordpress.com/>
>
> Disclaimer: Use it at your own risk. Any and all responsibility for any loss,
> damage or destruction of data or any other property which may arise from
> relying on this email's technical content is explicitly disclaimed. The
> author will in no case be liable for any monetary damages arising from such
> loss, damage or destruction.
>
>
> On 28 August 2016 at 08:47, Jacek Laskowski <ja...@japila.pl
> <mailto:ja...@japila.pl>> wrote:
> Hi Mich,
>
> This is Scala's string interpolation which allow for replacing $-prefixed
> expressions with their values.
>
> It's what cool kids use in Scala to do templating and concatenation 😁
>
> Jacek
>
>
> On 23 Aug 2016 9:21 a.m., "Mich Talebzadeh" <mich.talebza...@gmail.com
> <mailto:mich.talebza...@gmail.com>> wrote:
> What is --> s below before the text of sql?
>
> var sales_order_sql_stmt = s"""SELECT ORDER_NUMBER , INVENTORY_ITEM_ID,
> ORGANIZATION_ID,
>
> from_unixtime(unix_timestamp(SCHEDULE_SHIP_DATE,'yyyy-MM-dd'),
> 'yyyy-MM-dd') AS schedule_date
>
> FROM sales_order_demand
>
> WHERE unix_timestamp(SCHEDULE_SHIP_DATE,'yyyy-MM-dd') >=
> $planning_start_date limit 10"""
>
>
> Dr Mich Talebzadeh
>
> LinkedIn
> https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw
>
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>
> http://talebzadehmich.wordpress.com <http://talebzadehmich.wordpress.com/>
>
> Disclaimer: Use it at your own risk. Any and all responsibility for any loss,
> damage or destruction of data or any other property which may arise from
> relying on this email's technical content is explicitly disclaimed. The
> author will in no case be liable for any monetary damages arising from such
> loss, damage or destruction.
>
>
> On 23 August 2016 at 07:31, Deepak Sharma <deepakmc...@gmail.com
> <mailto:deepakmc...@gmail.com>> wrote:
>
> On Tue, Aug 23, 2016 at 10:32 AM, Deepak Sharma <deepakmc...@gmail.com
> <mailto:deepakmc...@gmail.com>> wrote:
> val df = sales_demand.join(product_master,sales_demand.$"INVENTORY_ITEM_ID"
> === product_master.$"INVENTORY_ITEM_ID","inner")
>
> Ignore the last statement.
> It should look something like this:
> val df = sales_demand.join(product_master,$"sales_demand.INVENTORY_ITEM_ID"
> === $"product_master.INVENTORY_ITEM_ID","inner")
>
>
> --
> Thanks
> Deepak
> www.bigdatabig.com <http://www.bigdatabig.com/>
> www.keosha.net <http://www.keosha.net/>
>
>
>
