FULL SQL DATABASE COURSE | Beginner to Intermediate in 1 Hour

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  • Опубликовано: 14 май 2024
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    ┋Timestamps┋
    00:00 Course outline
    03:11 Databases
    06:27 Queries, tables and keys
    09:39 Windows postgreSQL installation
    11:48 MacOS postgreSQL installation
    13:54 CREATE TABLE
    20:58 INSERT INTO
    24:37 SELECT, WHERE, AND & OR
    28:49 IN, NOT IN, IS NULL, BETWEEN
    32:32 ORDER BY, LIMIT, DISTINCT and Renaming columns
    35:09 EXTRACT
    36:21 UPPER, LOWER, LENGTH, TRIM
    38:30 Concatenation, Boolean expressions and Wildcards
    43:02 SUBSTRING, POSITION, COALESCE
    46:11 MIN, MAX, AVG, SUM & COUNT
    48:16 GROUP BY & HAVING
    52:05 CASE (with GROUP BY and for transposing data)
    56:18 JOIN & UNION
    1:02:31 Subqueries
    1:07:15 Bonus - 30 day moving total
    1:09:34 Outro
    ┋Files┋
    Github repo for code ➡︎ github.com/mochen862/full-sql...
    Install pgAdmin (Windows & Mac) ➡︎ www.postgresql.org/download/
    Thanks so much for taking a little time out of your day to watch this!

Комментарии • 248

  • @dianastryzhak6392
    @dianastryzhak6392 23 дня назад +1

    I love the video! It is a change of scenery after boring SQL classes at uni! Can't wait for the new one :)

  • @bbcg0420
    @bbcg0420 6 месяцев назад +3

    i came from your excel tutorial playlist and now I'm here in sql! thank you so much for putting an effort to help us in this journey, it's very much appreciated 🙏

  • @alvocommunity1940
    @alvocommunity1940 2 месяца назад +1

    Very goog lesson, Mo Chen!!!
    I'm brazilian beginner in SQL.

  • @kingofaz2011
    @kingofaz2011 Месяц назад

    Thank you for this great lesson. very well laid out and good pace. I'll be able to refer back to this for a very long time.

  • @stluke324
    @stluke324 3 месяца назад

    Thanks Mo. Watched this before I did a certification course in Coursera and it was a breeze. Thanks again!

  • @lester_cch9877
    @lester_cch9877 Месяц назад

    Thank you so much for your tutorial. You don't know hou much this helps me in my professional carreer. Best!

  • @michaelkirkby6306
    @michaelkirkby6306 2 месяца назад

    Thank you very much fior a succinct and informative demonstration.

  • @asafzilberberg6648
    @asafzilberberg6648 4 месяца назад

    Great tutorial - thank you

  • @goodboyvincenzo
    @goodboyvincenzo Год назад +35

    Really appreciate the effort you put into this! It's hard to walk this journey alone but because of people like you things are easier to handle 🙏 Would love to see some advanced SQL as well!

    • @mo-chen
      @mo-chen  Год назад +13

      Hey Larissa 👋 Thanks so much for watching! I will for sure make an advanced SQL course, hopefully soon rather than later 😃

  • @theretroman3862
    @theretroman3862 5 месяцев назад

    Great one! Much appreciated!

    • @mo-chen
      @mo-chen  5 месяцев назад +1

      Glad it helped! Thanks for watching 😁

  • @Svgcibay
    @Svgcibay 6 месяцев назад

    I thank you very, very much. you guided me on my way to data analyst. my english is not very good, I hope you understand me. the video was great, I analyzed all the examples. 👍👍👍👍👍👍

  • @mariannedelarosa8896
    @mariannedelarosa8896 11 месяцев назад +2

    Thank you, Mo! This tutorial is awesome, you're an inspiration!

    • @mo-chen
      @mo-chen  11 месяцев назад +1

      Thanks so much Marianne for the kind words 😃

  • @ahmadrazachohan365
    @ahmadrazachohan365 6 месяцев назад

    Amazing work Mo! Thank you for all the hard work you put into this project. This is really quite helpful 🙏

    • @mo-chen
      @mo-chen  6 месяцев назад

      Glad you enjoyed it!

  • @johnadoga9765
    @johnadoga9765 7 месяцев назад +1

    Great video, it's almost everything a beginner to SQL hopes to find, thank you Mo

    • @mo-chen
      @mo-chen  7 месяцев назад

      Glad it was helpful!

  • @lenheimsy
    @lenheimsy 8 месяцев назад +1

    This is very helpful! Thanks for putting this all out! ❤

    • @mo-chen
      @mo-chen  8 месяцев назад

      I’m glad you liked it! Thanks for watching 😃

  • @gabby_asiedu21
    @gabby_asiedu21 6 месяцев назад

    Well done for such a great work. I think the speed was high so I suggest you break the video into topics such that you will take your time to explain very well. More grease to your elbow. Great video❤

  • @kennylaucw
    @kennylaucw 9 месяцев назад +7

    Really helpful! Previously took a sql course on coursera, and this video helps me consolidate what I learnt and clear some more complicated concepts. Thank you!

    • @mo-chen
      @mo-chen  9 месяцев назад

      Thanks for watching, I'm glad you found the video useful 😃

  • @sandipkadam6041
    @sandipkadam6041 5 дней назад

    Very nice explanation.... Great 👍

  • @marcusthompson6775
    @marcusthompson6775 10 месяцев назад +2

    This is such a well made and helpful video...Thank you for taking the time to do this. You are such a talented teacher! I look forward to your future videos. THANK YOU!

    • @mo-chen
      @mo-chen  10 месяцев назад

      Thanks so much for the kind words and for watching 😁

  • @tonmanntom4239
    @tonmanntom4239 Год назад +2

    yooo thanks 4 the work you put in this one! Cheers & keep it up 🤘😔🤘

    • @mo-chen
      @mo-chen  Год назад

      No problem at all, thank you for watching 😃

  • @mohamedabdelmenem7810
    @mohamedabdelmenem7810 Год назад +19

    What a great video !🔥🔥
    I am just beginning my way to become a data analyst and your tutorial is absolutely amazing❤
    I hope that this tutorial is just the beginning and you will upload tutorials for rest of the roadmap (Excel, tableau, Power BI,....etc)

    • @mo-chen
      @mo-chen  Год назад +8

      Thank you so much for watching! I really hope so too that I’ll be able to make more tutorials like this 😃

  • @wvandrooge
    @wvandrooge Год назад +8

    Great to see you actually put a course about this online! Thank you for your efforts. I'd like to do a suggestion: is it possible for you to make a course intermediate to advanced SQL for people like me? I have some issues finding a structured course on for this level on SQL online and I think you would be a great person for me to learn from! :)

    • @mo-chen
      @mo-chen  Год назад +9

      Hi Wijnand, great suggestion! I will certainly release a 2nd course on advanced SQL queries, just don't exactly know when yet (hopefully within the next 2-3 months). Thank you so much for watching 😃

  • @Anj-dh9mc
    @Anj-dh9mc Год назад +2

    Thank you for your effort in doing this SQL database course Mo. I'm already at the capstone module of Google's DA course and still a bit lost. I kinda understand how SQL works now, especially the primary, foreign and composite keys.

    • @mo-chen
      @mo-chen  Год назад

      Hi Anj 👋 I’m glad you liked the video, thanks a lot for watching!

  • @fgbvibeshot9196
    @fgbvibeshot9196 Год назад +1

    Thank you for this. I will watch this now. Keep on sharing my friend - Glenn

    • @mo-chen
      @mo-chen  Год назад

      Thanks so much for watching 😃

  • @maricruz3266
    @maricruz3266 Год назад +13

    I was literally about to ask you if you could do this!!! So far your videos have been so great. I love how you explain everything as we go along. 🎉 I'll let you know what I think! 😊

    • @mo-chen
      @mo-chen  Год назад +1

      Thanks a lot Maricuz!

  • @fk4866
    @fk4866 11 месяцев назад +1

    Thank you for so many visuals! Thats' what I needed for sure

    • @mo-chen
      @mo-chen  11 месяцев назад

      I'm glad you liked the video F K! Thanks a lot for watching 😃

  • @Mikoaj-ie6gt
    @Mikoaj-ie6gt 9 месяцев назад +1

    thanks Mo, this is really good reminder about SQL basics that I used for my hiring test!

    • @mo-chen
      @mo-chen  9 месяцев назад +1

      I'm glad you found it useful, thanks for watching 😁

  • @emersonsilva4955
    @emersonsilva4955 Год назад +2

    Thank you so much! You are doing a great work.

    • @mo-chen
      @mo-chen  Год назад

      Thank you so much for watching Emerson!

  • @aidar7066
    @aidar7066 Год назад +1

    Great work! Thats exactly what i needed

    • @mo-chen
      @mo-chen  Год назад +1

      I'm glad you liked it Aidar 😁 Thanks a lot for watching!

  • @timothykimari8154
    @timothykimari8154 4 месяца назад

    thankyou sir for this

  • @LokeshBiradar63
    @LokeshBiradar63 9 месяцев назад +1

    Most of the things covered in an one hour video. Thank you!

    • @mo-chen
      @mo-chen  9 месяцев назад +1

      I’m glad you found it useful! Thanks a lot for watching 😃

  • @jmmj5018
    @jmmj5018 7 месяцев назад +1

    thanks for this MO. thanks for taking the time to post this and help a lot of people.

    • @mo-chen
      @mo-chen  7 месяцев назад

      Glad it was helpful!

    • @jmmj5018
      @jmmj5018 6 месяцев назад

      @@mo-chen really grateful. 🙏😊you have simplimfied things that were quite vague to me in my other resources. Bless you more. :)

  • @ablayendiaye7223
    @ablayendiaye7223 7 месяцев назад

    Thanks so much. You really help me finding a good roadmap to learn SQL. I will appreciate a lot other tutoriels like this one in Power BI and Excel if it's possible.

    • @mo-chen
      @mo-chen  7 месяцев назад

      Glad it was helpful!

  • @davidvo2722
    @davidvo2722 Год назад +1

    thank you so much. Applying to new job and have been studying all your videos!

    • @mo-chen
      @mo-chen  Год назад +1

      Hi David 👋 I'm glad you find the content useful! Thanks for watching 😃

  • @zhouyangh6252
    @zhouyangh6252 7 месяцев назад +1

    What an amazing video!!! Thank you so much Mo! I couldn't wait for the next Intermediate to Advanced!

    • @mo-chen
      @mo-chen  7 месяцев назад

      I’m glad you liked it! Hopefully I’ll get to make the intermediate and advanced soon 😃

  • @thebook9695
    @thebook9695 3 месяца назад

    I want to thank you for creating this amazing tutorial. I just finished my Google Data Analysis Course on Coursera and found this very useful and well-explained. Can't wait to start with a job hunt. Thank you again, you don't have an idea how helpful your tutorial was for me.

  • @ikhsanudin3309
    @ikhsanudin3309 Год назад +1

    This is great! thank you Mo

    • @mo-chen
      @mo-chen  Год назад

      Thank you for watching, I’m glad you liked the video!

  • @annushka7778
    @annushka7778 Месяц назад

    Thankyou ❤1 hour of clear information intead of 450 hours of unclear info on other platforms that only waste your time

  • @franciscomedinav
    @franciscomedinav Год назад +1

    Great tutorial!!
    Thank you!!!

    • @mo-chen
      @mo-chen  Год назад

      I'm glad you liked it Francisco! Thanks for watching 😃

  • @joephiliph12
    @joephiliph12 Месяц назад

    Excellent tutorial even if the speed is so fast......

  • @abdusinc2557
    @abdusinc2557 7 месяцев назад +1

    Thank you so much. You channel has been incredibly valuable to me as I begin my journey in analytics. I've learned from from you than I have in school. Your videos inspire to keep working hard and you make it easy to learn with you. May God bless you for sharing your knowledge.

    • @mo-chen
      @mo-chen  7 месяцев назад

      Great to hear! Thanks so much for watching 😁

  • @johaybersarip7856
    @johaybersarip7856 Год назад +2

    I really like the video tutorial you saved in your channel, I will watch again the tutorial for the second time for me to master the basic concept. Thank you very much for these lectures. Have a great day and and keep on posting educational videos/lectures about Data science.

    • @mo-chen
      @mo-chen  Год назад

      I'm very glad you like the content Johayber 😄Thanks so much for watching!

    • @johaybersarip7856
      @johaybersarip7856 Год назад

      @@mo-chen You're welcome sir I want to become a Data Scientist as because I need this to my field as a chemistry student

  • @kaiokhan2837
    @kaiokhan2837 Год назад +2

    thank you for your time and effort
    amzing video , you will blow up soon !

    • @mo-chen
      @mo-chen  Год назад +1

      Thanks so much for watching!

  • @ursugar_
    @ursugar_ Год назад +3

    Thank you so much, absolutely wonderful

    • @mo-chen
      @mo-chen  Год назад +1

      I'm glad you liked it, thanks so much for watching 😄

  • @newyork_life_travel
    @newyork_life_travel Год назад +1

    great video! thanks!

    • @mo-chen
      @mo-chen  Год назад

      Thank you for watching 😃

  • @Loicmartins
    @Loicmartins 9 месяцев назад +1

    Thanks you very much for your work!

    • @mo-chen
      @mo-chen  9 месяцев назад

      Thanks so much for watching, I'm glad you liked it 😁

  • @ed684
    @ed684 7 месяцев назад +1

    Thank you so much! You helped me learn faster for my university exam

    • @mo-chen
      @mo-chen  7 месяцев назад

      Glad I could help! Good luck with your exam 😁

  • @TuMaLife
    @TuMaLife Год назад +33

    I’ve learnt more from Mo than attending actual classes… 👏🏾👏🏾

    • @mo-chen
      @mo-chen  Год назад +4

      I'm so glad you found the video useful, thanks a lot for watching 😄

    • @Dennisaj
      @Dennisaj 6 месяцев назад +2

      For real…
      Isn’t it sad that RUclipsrs can teach better than actual TEACHERS and they teach it for FREE!!!

    • @julianwilliams3721
      @julianwilliams3721 18 дней назад +1

      @@Dennisaj yea, I just wish recruiters would value non-college learning as much as a degree

  • @karthiksk2962
    @karthiksk2962 10 месяцев назад +1

    Great content, so many topics covered in just 1 hour.

    • @mo-chen
      @mo-chen  10 месяцев назад

      Thanks a lot for watching, I'm glad you liked it 😃

  • @UniParse
    @UniParse 7 месяцев назад +1

    thanks MOCHEN 😄😁🥰!!
    even though am not Data Analyst,
    but as full-stack web dev,
    this 70min saved weeks of my time,
    so I will contribute to this repo,
    by pulling request,
    with improved readability commit,
    and png screenshot of tables.

    • @mo-chen
      @mo-chen  7 месяцев назад

      Thanks so much for improving the readability 🙏 I’ll quickly review it when I get the chance. I’m glad the video helped you learn faster 😃

  • @ChimdikeOjo-david-ml4wj
    @ChimdikeOjo-david-ml4wj 15 дней назад

    Hello mr Chen thank you so much for your videos 🙏🏿..I am an aspiring Data analyst planning to explore
    A secondary School student from Nigeria.. hoping to learn more things from your tutorials sir😊

  • @leoCarCampos
    @leoCarCampos Год назад +1

    great content Mo!

    • @mo-chen
      @mo-chen  Год назад

      Thanks a lot for watching Leonardo!

  • @The_GrowthChannel
    @The_GrowthChannel Год назад +2

    Thank you Mo, you are doing awesome

    • @mo-chen
      @mo-chen  Год назад

      Thanks so much for sticking around on the channel 😃 I'm very glad you're still here!

  • @JoaoSantos-dg7xm
    @JoaoSantos-dg7xm Год назад +1

    Hi there, nicely done with the tutorials. Bring it more, im seriously interesting in Data Science. Working with pandas and numpy at the moment Cheers :)

    • @mo-chen
      @mo-chen  Год назад

      All the best with your data science journey! Thank you so much for watching 😄

  • @bigbri04
    @bigbri04 5 месяцев назад

    Great Video. Very useful and easy to understand.

    • @mo-chen
      @mo-chen  5 месяцев назад

      Glad it was helpful!

  • @carlosfernandez6477
    @carlosfernandez6477 10 месяцев назад +1

    Very useful video, really liked how visual everything was

    • @mo-chen
      @mo-chen  10 месяцев назад

      That’s great, thanks so much for watching!

  • @008-memanishankarjha6
    @008-memanishankarjha6 5 месяцев назад

    Thanku Sir

  • @nareshkumar-cn6jo
    @nareshkumar-cn6jo Год назад +3

    Great video to learn....Great work brother ....

    • @mo-chen
      @mo-chen  Год назад

      Thanks a lot for watching Naresh 😃

  • @mechanosys
    @mechanosys 14 дней назад

    I am not from IT, age 54 and Mechanical Engineer with 30 years experience in Plant Maintenance. I am learning with your instructions and the video step by step. Same way I have learnt Python, HTML5, CSS, JS, NodeJS, Docker, VSCode, C#, MySQL, PostgreSQL, MongoDB, Git and GitHub, NoSQL, etc. and I am still looking for new things to be learned ! Thank you from India, for the simple and easy to follow videos.

  • @amindouale829
    @amindouale829 5 месяцев назад

    thank you very much...

    • @mo-chen
      @mo-chen  5 месяцев назад

      Thanks for watching!

  • @harshadasathe6477
    @harshadasathe6477 7 месяцев назад

    Great explanationn❤❤❤❤ , You are great teacher , i am learning so much from your channel , waiting for more videos

    • @mo-chen
      @mo-chen  7 месяцев назад

      Thank you for the kind words!

  • @Bee-The-Explorer
    @Bee-The-Explorer Год назад +2

    Hi Mo, great explanation. Thanks for this. Can you also do a comparation between Tableau vs Power BI and the one you would prefer? looking forward for more content!!!!! 🙌🏻

    • @mo-chen
      @mo-chen  Год назад +1

      Thanks so much for watching! It's a great video idea 😁

  • @nav5991
    @nav5991 Год назад +2

    Thankyou so much... Please also cover cte and window fxns too🎉🙌

    • @mo-chen
      @mo-chen  Год назад +1

      I’m glad you liked it! I will try my best, there will be more sql videos coming for sure 😃 Thanks a lot for watching!

  • @grapefruitomega3517
    @grapefruitomega3517 Год назад +2

    Top stuff 🎉

  • @rojaskhobragade4882
    @rojaskhobragade4882 3 месяца назад

    Plz make video on Power Bi also

  • @bngleboy
    @bngleboy 9 месяцев назад

    Hi Mo!
    Great! I'm learning a lot. Thanks for making database understanding very easy!
    Question, do you have these data available for your audience in any separate file (like excel or any other format) ?
    You guessed it, I'm thinking of copying those data and use... :)

    • @mo-chen
      @mo-chen  9 месяцев назад +1

      Thanks a lot for watching! I don't have the data in Excel format, but you can easily export your tables to CSV format using postgres CLI (command line interface).

  • @prashlovessamosa
    @prashlovessamosa Год назад +1

    Awesomely Explained.

    • @mo-chen
      @mo-chen  Год назад

      I'm glad you liked it Prashant 😁 Thanks a lot for watching!

  • @aartibarve8680
    @aartibarve8680 6 месяцев назад

    Thank you so much for all the amazing work! I cant access the git repo for code. Can you please help me with that?

  • @kurosawa1004
    @kurosawa1004 8 месяцев назад +1

    New subscriber, thank you

    • @mo-chen
      @mo-chen  8 месяцев назад +1

      I’m glad you liked it, thanks for the sub 😃

  • @IAmLove213
    @IAmLove213 7 месяцев назад

    Invested so much money into a Master program to only come out feeling lost and uneducated. You are amazing and make me feel like I can do it. Thank you for all of your knowledge, skills, and time putting this together. ❤New subscriber here!

    • @mo-chen
      @mo-chen  7 месяцев назад

      Great to have you here on the channel!

  • @dwzard
    @dwzard 6 месяцев назад

    Hi Moe! Thanks for this but whe I copy that entire cope and press run but it doesnt show the table? that should easily show the table right?

  • @angelocastilloperz
    @angelocastilloperz Год назад +1

    I love your content friend, greetings from Perú.

    • @mo-chen
      @mo-chen  Год назад

      Thanks a lot for watching Angelo 😁

  • @Zeenrialor
    @Zeenrialor 9 месяцев назад +2

    Please make more videos like this on other coding language like java.. I love this.. Thanks bro..

    • @mo-chen
      @mo-chen  9 месяцев назад

      I would love to when my time allows it 😁 Thanks so much for watching!

  • @rehabramadan7613
    @rehabramadan7613 7 месяцев назад

    Hi mo l had done 3projects of Excel and your project that you shared in another video now how can get just the data and do it by my self

  • @aloSolo
    @aloSolo 2 месяца назад +2

    where do you i get the sql file to follow along?

  • @robinbogwald4514
    @robinbogwald4514 10 месяцев назад +1

    Hi Mo!
    Great video!
    I didn't quite catch how you imported the excel file to PostreSQL. Because you have to import a cvs file or something in advance to do the things you are doing in the video? Or did you make the dataset with the codes? There is something I don't understand about coding, and it's not the codes, but rather how you import your own specific data into these programs.
    It's possible that I have expressed myself poorly, and I apologize for that.
    But what I'm wondering is if you have already loaded the Excel sheet you're showing on the right side, or if you simply create the table and the data in the table.
    Thank you in advance!

    • @mo-chen
      @mo-chen  10 месяцев назад +2

      Hi there, I didn't import any Excel files in this video. All the code is available in the github repo (create tables, insert values, and all other queries). I left the link in the description box. Thanks a lot for watching 😁

    • @robinbogwald4514
      @robinbogwald4514 10 месяцев назад +1

      @@mo-chen Ok! Thank you for your help , and quick response! Keep up the videos, they are really good :)

  • @javelynhazeldine1847
    @javelynhazeldine1847 7 месяцев назад

    I'm at 57:48, and kinda stuck INNER JOIN as it's suddenly s.coffeeshop_name,.. (I don't full understand the "alias" and how it named like that "s.coffeeshop"). It took a while before I figured it out through w3school. As a beginner, I would suggest you to go through/add this part in the future tutorial, as it's fundamental before moving on to a more complex code.
    It also could be that I have no previous coding experience so it was confusing at first try LOL

  • @assyifamulandar3904
    @assyifamulandar3904 2 месяца назад

    Hi, Mo. I have a trouble. When I run the SELECT * FROM employees, why my all of my coffeeshop_id (FK) is still filled with null(s) in each employee?

  • @user-re4ip5ms9w
    @user-re4ip5ms9w 2 месяца назад

    question for length how can you then look at the max length of the email without having an error that says
    column "email_length" does not exist
    example
    SELECT email, LENGTH(email) AS email_length, Max(email_length)
    FROM employees

  • @monicakristin8144
    @monicakristin8144 5 месяцев назад

    tq

  • @santilo76
    @santilo76 Год назад +1

    Wow, i have not seen it yet, but thanks in advance for your contributions to this community. Cheers Mo

    • @mo-chen
      @mo-chen  Год назад

      Thank you santilo76 😁

  • @ZakiXcx
    @ZakiXcx Год назад +1

    great work

    • @mo-chen
      @mo-chen  Год назад +1

      Thanks so much for watching Zaki 😄

  • @zabashhd459
    @zabashhd459 8 месяцев назад

    You are Amazing Although i am also learnign SQL from Coursera UC Davis

    • @mo-chen
      @mo-chen  8 месяцев назад +1

      Thanks a lot for watching and good luck with your sql learning 😁

    • @zabashhd459
      @zabashhd459 8 месяцев назад

      Thanks !!!!@@mo-chen

  • @user-re4ip5ms9w
    @user-re4ip5ms9w 2 месяца назад

    I have been using ssms, what's the difference with PostgreSQL? and will my knowledge of ssms apply to PostgreSQL?

  • @valeriaholovchyk4766
    @valeriaholovchyk4766 Год назад +1

    Great 🎉🎉

    • @mo-chen
      @mo-chen  Год назад

      Thank you for watching Valeria 😁

  • @prashlovessamosa
    @prashlovessamosa Год назад +1

    Completed kindly make another one a Advanced one please it would be helpful.

    • @mo-chen
      @mo-chen  Год назад

      I will for sure make a course on advanced SQL queries just not exactly sure when yet 😅

  • @thiagonazario2145
    @thiagonazario2145 5 месяцев назад +1

    amazing

    • @mo-chen
      @mo-chen  5 месяцев назад

      Glad you think so!

  • @gktgknr
    @gktgknr 3 месяца назад

    5:34 this mail names are kinda sussy, i liked that lol

  • @yingwang3771
    @yingwang3771 10 месяцев назад +1

    Hi Mo, really grateful to find your training video 😊 I am brand new to SQL, had to ask how was data get transferred into SQL to create the table please? I have followed all the coding steps but no table was created. I must have missed an important step here…. Could you please help.xx

    • @mo-chen
      @mo-chen  10 месяцев назад

      Hi there 😃 If you follow the code exactly sequentially, then you should definitely have your tables created. Could you please try again from the beginning?

  • @user-re4ip5ms9w
    @user-re4ip5ms9w Месяц назад

    btw whats the practical use for unions?

  • @heyrosanna
    @heyrosanna 8 дней назад

    Do you think a person needs strong math skills to be a day analyst and eventually make it to 200K+? I am a fast learner but never really liked school so my math skills are really good when it comes to everyday computations. I almost never need a calculator but barely passed statistics in college mostly due to ADHD and not learning well in a structured setting.

  • @javelynhazeldine1847
    @javelynhazeldine1847 6 месяцев назад

    At 1:05:04, I want to use this subquery to find all the coffee shop in US, here is the code I wrote:
    SELECT coffeeshop_name
    FROM SHOPS
    WHERE city_id IN (select city_id
    from locations
    where country = 'United States');
    For some reason, this returned with coffeeshop_id 1,2,3,4 (including United Kingdom coffeeshop) and 5 is missing (5 also belong to US)
    Just wondering where did I go wrong from here. I apprecited if you could look at the above code) :(

  • @gabrielmaria295
    @gabrielmaria295 Год назад +1

    good job....

    • @mo-chen
      @mo-chen  Год назад

      Thank you for watching 😃

  • @sarwaraghbar3322
    @sarwaraghbar3322 6 месяцев назад

    Could someone tell me why he uses a 23:13 update instead of directly inserting all the data into the table through 'insert into'?

  • @cheuguy
    @cheuguy Год назад +1

    Where do you get your tshirts? Im looking for some oversized one like the one you’re wearing and it seems like a great fit!

    • @mo-chen
      @mo-chen  Год назад

      Funny enough you’re not the first one to ask this 😃 The brand is called Uniqlo, and they’re really affordable and good quality.

  • @revanthrevanth6948
    @revanthrevanth6948 9 месяцев назад +2

    16:55 When Mo turned into a Sigma!!!! and great tutorial by the.

    • @mo-chen
      @mo-chen  9 месяцев назад

      I'm glad you liked it! Thanks a lot for watching 😁

  • @weekendveda6359
    @weekendveda6359 Год назад +1

    Thanks u

    • @mo-chen
      @mo-chen  Год назад

      Thanks a lot for watching!

  • @Andy_TKC
    @Andy_TKC Год назад +1

    Thank you Mo, luv 😊What do you think of 'Orange Data Mining'?

    • @mo-chen
      @mo-chen  Год назад

      Thanks for watching Andy! I've never used orange data mining, but just googled it and it looks fun 😄

  • @i.d.8737
    @i.d.8737 6 месяцев назад +2

    finally a hot SQL teacher

    • @mo-chen
      @mo-chen  6 месяцев назад

      Thank you!

  • @sangeet8609
    @sangeet8609 Год назад

    Could please make a video on dax how to use in power BI and when to use it ? Please 🙏🏻

    • @mo-chen
      @mo-chen  Год назад +1

      Hey Sangeet 👋 I’m not sure when I’ll be making a video on dax within power bi, so I’ll try and answer your question here for now. You should use DAX when creating measures.

    • @sangeet8609
      @sangeet8609 Год назад

      @@mo-chen Thank You I’ll Give it a try.