PySpark Tutorial: Spark SQL & DataFrame Basics

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Thank you for watching the video! Here is the code: github.com/gah...
Titanic Dataset: www.kaggle.com...
Code For Setting Up Spark 3 in Colab: jacobcelestine...
Learn Python, SQL, & Data Science for free at mlnow.ai/ :)
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26 сен 2024

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Комментарии : 98

@GregHogg Год назад

Take my courses at mlnow.ai/!

@TheALahiri 2 года назад

Many thanks Greg for opening up a new frontier! I had no idea Google Colab was so generous and allowed installation and practicing of Spark. Your tutorial packs an astonishing amount of information, that too in an engaging way, in a very short timeframe. You are now my Guru for Spark.

@GregHogg 2 года назад

Yup, it does! 😃

@jacobburt5424 2 года назад

I appreciate you and your videos so much. In my data science classes we're expected to teach ourselves Pyspark, Dataframe, Pandas and a bunch of other technologies and you've made the experience much more manageable.

@GregHogg 2 года назад

Well I'm super happy to hear that Jacob, thanks for the kind words!

@andersborum9267 11 месяцев назад

These introductory videos are pure gold; thanks for sharing.

@GregHogg 11 месяцев назад

Thank you greatly for the kind words, and for your support! It means a lot. 😊

@barmalini 2 года назад

In just 17 minutes I've learnt so much. Thanks!

@GregHogg 2 года назад

Perfect, really glad to hear it :)

@gauravraichandani7722 3 года назад

This was really amazing. Waiting for more uploads on pyspark.

@GregHogg 3 года назад

Awesome! Did you catch the other 15 minute long one?

@gauravraichandani7722 3 года назад

Yep, I have. Followed along both the videos.

@GregHogg 3 года назад

@@gauravraichandani7722 okay awesome!

@prithvib 2 года назад

This videos deserves 1m views

@GregHogg 2 года назад

Haha that would definitely be preferred, thanks so much for the kind words I really appreciate it!

@ashutoshsingh7529 Год назад

Thank you so much. Pretty covers everything you to get started with pyspark. I wish you had included merging as well.

@tkadado 2 месяца назад

Excellent presentation and to the point !!!

@nishantbahikar5639 2 года назад

Bro you have explained it so well.. keep going

@GregHogg 2 года назад

Thanks, great to hear!

@arsheyajain7055 3 года назад

I was waiting for this one!

@GregHogg 3 года назад

I've wanted to make this for a long time since the PySpark RDD video did so well. Enjoy!

@faizalshebli9520 3 года назад

Great video. Simple yet effective to comprehend.

@GregHogg 3 года назад

I'm very glad to hear that Faizal, and I greatly appreciate your kind words!

@ramanantoaninaharintsoanan7752 2 года назад

Thanks for sharing your knowledge. Great video.

@GregHogg 2 года назад

You're very welcome and glad to hear it!

@saketsrivastava84 2 года назад

Amazing content...please prepare more like these.. 👍🏻

@coemgeincraobhach236 2 года назад

Thanks so much Greg, great job! Paying thousands for a masters at university, and people like you consistently pump out tutorials of way better quality. Its madness.

@GregHogg 2 года назад

Yup that's how it goes! Haha I'm really glad to have helped 😃

@noushinbehboudi5694 3 года назад

Awesome. Please keep up the good work. Please make more videos in spark. Thank you

@GregHogg 3 года назад

Awesome, thank you!

@noushinbehboudi5694 3 года назад

Could you please suggest any good material video tutorial for pyspark for a newbie?

@GregHogg 3 года назад

@@noushinbehboudi5694 Isn't that this one?

@noushinbehboudi5694 3 года назад

@@GregHogg I started pyspark with your videos. But I only found 2 videos in your channel. Are you going to upload more?

@GregHogg 3 года назад

@@noushinbehboudi5694 Makes sense. Not for awhile unfortunately, I would recommend doing the databricks specialization on Coursera :)

@mohamedelkhaldi1096 2 года назад

Thank you so much !!! Always great contents

@GregHogg 2 года назад

You're super welcome. Really glad to hear that.

@ronaldfungss 2 года назад

This is amazing! Thanks Greg : ]

@GregHogg 2 года назад

Awesome! You're very welcome 😄

@josephjoestar995 Год назад

Thanks

@GregHogg Год назад

Wow, that was very nice of you Joseph! Thank you :)

@matattz Год назад

I would like to hear your opinion on Ponder. Considering that you can now work with Ponder similarly to how you work with Spark, do you believe it is still necessary to learn PySpark? I'm interested in your perspective on this matter, and if you are aware of any downsides or differences between Ponder and Spark.

@SaffTechJourney 2 года назад

You're awesome man!

@GregHogg 2 года назад

No you!

@Buxussempervirens Год назад

This is so amazing 😍😍

@GregHogg Год назад

Thanks so much!!

@AkshayKumar-vd5wn Год назад

Thank you for the video. I have a problem - When I convert a column from string to int and then run printSchema it shows String and not the int. Is there a better way to convert string column to int in pyspark and make it a permanent change? I use thr data uploaded locally, I.e from my computer. Is this happens to only locally uploaded files? Will the conversation take place smoothly when operating on okne databases i.e through servers.

@byronexaporriton318 2 года назад

how can we create a python DataFrame from an already existing table?

@GregHogg 2 года назад

You'll need to read in the file using one of Sparks read functions

@DavidClaxton-s2u Год назад

Small annoyance, but does anyone know why when I run something, like spark.sql('select * from Movies'), for example, it gives me the datatypes instead of displaying the actual table data?

@GregHogg Год назад

Empty table maybe?

@soumyadeeppattanaik526 2 года назад

hey.. Hogg while i am trying to extract sum of sales by grouping the states from the dataframe, its giving an unnesessary floating values. If the sum is 150.0 its giving like 150.856743 like this.can you explain this..

@ranasana9681 2 года назад

Thank u so much, sir i have à problem in converting spark.dataframe to pandas.df, beacuse i have a large number of data... How can i do !?

@GregHogg 2 года назад

Isn't there a .topandas function?

@malanshinde6814 2 года назад

Awesome

@GregThatcher 3 месяца назад

Thanks!

@GregHogg 3 месяца назад

From Greg to Greg, thank you so much!

@kishanbsh 2 года назад

Can you expand more on the sql bit along with joins?

@GregHogg 2 года назад

Not in the comments (not properly, anyway); joins is merging two tables together by matching common rows. In PySpark, a join is essentially the exact same thing as it is in normal SQL. You'd have to learn what a join is first :)

@rjayanth 2 года назад

Thanks Greg , it was clean and straight forward. like it a lot.. could you suggest me a course to learn Spark .In our company we are trying to build a data lake on hadoop using hive.. We have a lot of complex stored procedures on a rdbms. i will be migrating all the logic into Data lake.. spark would be great tool to accomplish this.I would really appreciate if you suggest some online courses.

@GregHogg 2 года назад

No problem! Check out some of the big data courses on Coursera.

@adeyemiadeniran2871 2 года назад

I am getting an error message ' E: Unable to locate package open-jdk-8-jdk-headless'. What could be the reason plz?

@GregHogg 2 года назад

I think pip install PySpark is enough to install

@theodoruswidhi8192 3 года назад

bro what is the difference between .limit(3) and .show(3) ? i tried it on data brick using python on spark 3.0.1 . show command showed the csv dataframe&row , but limit command can't showed the csv dataframe&row.

@GregHogg 3 года назад

I don't know, sorry.

@AlexMar-r 8 месяцев назад

is this the same as Apache spark ?

@DanielWeikert 2 года назад

Are there more then the 2 videos on pyspark? Thanks and great work

@GregHogg 2 года назад

That's all I've got, sorry!

@ajaynayak4697 2 года назад

just wow.

@GregHogg 2 года назад

😄

@EzraSchroeder 2 года назад

i need to learn "the rest" of pyspark sql **fast** (& hardly know any sql at all). suggestions??? what are some good resources???

@GregHogg 2 года назад

Honestly, the documentation is great.

@shankarsr1 3 года назад

If we can use spark.sql then we don't need dataframes function like filter, agg etc.?

@GregHogg 3 года назад

It's essentially a different way of doing exactly the same thing. Sometimes I mix and match depending on how comfortable I am with what I'm trying to do

@gerardolamasrosales9777 2 года назад

Hola, como creo una base de datos con pyspark?

@mihirgaming716 3 года назад

Can anyone give the command to replace null value in age column with average age for each gender ?

@GregHogg 3 года назад

This is a great exercise 😁

@91horse 2 года назад

Awesome ! (..)

@GregHogg 2 года назад

Thank you!!

@jonbootralphs7553 6 дней назад

Allen Melissa Rodriguez Margaret Walker Jennifer

@ericarabarrington8312 6 дней назад

Young Larry Martin Robert Brown Angela

@garyhampton3739 Месяц назад

Hi, Greg - just come across your page - great tutorials : Getting the following error : 106 107 if not os.path.isfile(conn_info_file): --> 108 raise Exception("Java gateway process exited before sending its port number") 109 110 with open(conn_info_file, "rb") as info: Any advice ? Tried with the latest hadoop distro without success.

@darrienjohnson9053 Год назад

Don’t know if you’ll see this but I got into data engineering thru my company. They provided me the opportunity to become a software engineer, I was previously a cable installer/field tech. Although they provided this opportunity, I’ve still had to do much of my learning on my own. Your channel is amazing. Videos like these make all the difference. I really appreciate you making content where you’re walking thru the code. Once I get this under my belt I plan on creating content as well. Thank you. 🙏🏾

@GregHogg Год назад

Oh that's so great to hear!! Thank you for the kind words and I wish you all the best Darrien!!

@some90sKid Год назад

🙌🙌

@m_asare 2 месяца назад

This is amazing!! Thanks Greg.

@SoneGiant 2 года назад

I downloaded the train.csv file to my laptop's local hard drive, and tried to read it with titanic_df = spark.read.csv("c:\UserFiles\My Data\train.csv", header=True, inferSchema=True), but got an error message. Do you kbnow what I did wrong?

@kunjuperath 2 года назад

For installing pyspark, why didn't you just do `pip install pyspark`? I'm trying to use the pandas api that was introduced in 3.2 with this method but even if I wget and unzip the spark 3.2 tar file I can't import the module. Cool tutorial though!

@GregHogg 2 года назад

That's a great question. I actually didn't know it was this easy in Colab at the time. Thanks!