Spark Interview Question | Scenario Based | Merge DataFrame in Spark | LearntoSpark

In this video, we will learn how to merge two Dataframe in Spark using PySpark. we will discuss all the available approach to do it. Hope this video will be helpful in your Spark Interview Preparation.

Blog link to learn more on Spark:

Linkedin profile:

FB page:

[brogames]

Real and true looking forward to see more videos

[shubne]

Now you can use unionByName() function as well.

df3 = df.unionByName(df2, allowMissinColumns=True)
df3.show()

[ajaykiranchundi]

Last approach was incredible. Did not know it was possible to subtract the columns to get the delta!!

[coocrmw]

being a newbie to spark I find it very helpful boss.keep it up brother.looking forward to see more such from you.

[davimonteiropaulelli]

Excelent video Azarudeen, you helped me alot! Thankssss

[arvindyadav]

Thanks Azar for making such a nice scenario based question series with demo.

[Rajgupta-fhyt]

u r doing great job and its helping a lot to the beginners. Thanks

[krishnakishorenamburi]

great work Azar. I used the automatic technique for a datawareshousing project.

[smileplease]

Thank you so much for the videos. They definitely increased my hope towards practical learning!!!

[ankbala]

very nice approach and clear explanation! Thank you very much.

[dattaningole]

Very good explanation of each scenario .... Thanks a lot @Azarudeen Shahul... Keep it up

[SurendraKapkoti]

Very clear and useful. Thank you very much

[aneksingh]

Good video ..please keep posted on new scenario based questions

[nareshvemula]

Good videos. Thank you.
One small info, in "Automated Approach" if number of columns difference between two data frame is more than one and not in alphabetical order then it won't work.
We need to sort the columns while performing union operation like below.

[madhavkondapalli]

Thank you so much for these real time scenario videos brother
Eagarly waiting for more such
All the best

[souravsardar]

Excellent. Thanks for sharing.
Can u make a video on reading data from multiple parquet files of different schema using schema evolution.

[sasmigration]

Awesome Azharuddin, your videos are very helpful...Do you take any online coaching?

[DiverseDestinationsDiaries]

Hi Shaul,
Superb content. Never seen such an clear and all possible approaches in YouTube. Thanks a lot. Not only for the interview , to get out daily jobs done, you're videos so helpful.

[ashwinc]

Can you also make some videos on spark using scala? All your videos are brilliant

[heenagirdher]

Hi Azarudeen. Thank you so much for this video. I have implemented the same question in spark scala but I am facing problem in implementing the automated approach in spark scala. Could you please help me on this and provide me solution for the same.