Tableau Blend vs Join vs Relationship (Data Model) Explained - Part 1 | sqlbelle
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Part 1 Tableau Blend - In this multi-part series, we will explain and demo the differences between Tableau's blend vs join vs relationship - which are all ways of combining multiple files or data sources together.
We will describe each one, walk through demonstrations, and identify distinctive characteristics and potential limitations and/or drawbacks.
Part 1 focuses on Tableau Blend. We will look at how to create blends, underlying way it works, some quirks, and main reasons for using blend.
Part 2 focuses on Joins vs Blends. It also discusses the new Data Model introduced in v2020.2. A comprehensive summary is provided towards the end of the Part 2 video.
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Respect!! Blend is not an easy material to explain, but this video made so easy to grasp. Your database background is making you such a great instructor. The left join, aspect of the Blend, primary data source, and aggregation to the blended second data source were the missing point that you tackled here very explicitly.
Can't wait for the relationship tutorial week
Thank you so much for your note abderrahim. 🙂 This is also a product of struggling with blends earlier on. I am quite happy that there are better and easier ways to deal with combining data now (LODs and Relationships take a lot of the pain away)
@@sqlbelle Can blending be done within same datasource
@@monikadileep1731 no we can use join for that!
Yes.. It is possible..@@monikadileep1731
I have started learning tableau and then I found your videos on Data connection topics it is so nicely explained with examples. thanks for making such videos
I never usually subscribe or comment.. but your lucid explanation made me do that.. your channel is so underrated..more people should subscribe.
I really appreciate your feedback Onam, thank you.
This is probably the best explanation available online. I am new to Tableau and felt overwhelmed by most of these new concepts but watching your videos has helped me so much! Thank you!!
So happy to hear you found the video helpful, Albert :) .. Tableau is a wonderful tool, but it does get overwhelming sometimes - even for people who may have used it for years. It has a great community though! Happy Tableau'ing!
I’ve never heard anyone explaining blend so clearly!
Thank you for your comment! Glad you found the video useful :🙂
Thanks belle! I was often confused about the use case of blending. Now you've made it really clear. Great video!
Thank you Romy, I am happy to hear that! 🙂
This video has the clearest description of what data blending is. It essentially is a left join of the primary data.
I started to learn Tableau 6 months ago and I had watched this video a few times in the past. After 6 months, I am watching this video again and many things make better sense to me! Your Tableau videos are the best in class! Thank you!
Thank you Tony! :) Appreciate your kind comment and feedback!
This is the best explanation about data blending I've ever watched, very clear and very knowledgeable. I actually enjoy all the video you posted. Thank you.
Thank you, Vu! SO happy to hear that 🙂
Hands down the best place to learn Tableau on the internet. Thank you once again.
Fan of your teaching from India..love your videos as it is making more clear about data.
Pure Gold, understanding how blends work and the difference between the primary and secondary data source. Fantastic channel, packed with top info. Well done !
Thank you so much for your feedback Neil, so happy to hear you found the video useful! 😀
- Donabel
@@sqlbelle Please could you add a download link to the two spreadsheets you use.
Belle's videos are so well produced. It's an enjoyment to watch them.
Thank you Shisui!
Hats off to you! best video on yt on blends! Thank a ton. God bless you
I have watched so many videos.. But urs could be the best video if I want to suggest anyone. Take a bow for ur explanation. Became fan of your lecture.
Thank you Ganesh! I appreciate your very kind note.
OMG! what an easy way to explain Blend. Congratulations!
Thank you Ricardo! 🙂
Your giving reply to every comment, it's great mam. May god bless you 🙏🙏
Thank you Sampath. I try, and am trying not to miss some :)
The Level of Detail of the explanation is a Primary 🤓 distinction from the rest making other videos Secondary 😎👏👏👏
You are an excellent instructor ! Super helpful, thank you for sharing !
Thank you for your kind comments, Gera, and I am happy to hear you found the video helpful!
By far the best tutorial for Blend. Thank you so much.
Thank you Sneha!
Great Video and super helpful. I was struggling exactly on the same issue of asterisks to understand why it is happening on my dashboard, and, now I got the answer.. Keep up the great work!
Thank you sas all!
Amazing explanation on Blend. Although I have used tableau before but I didn't know that blend is a left join. Only one suggestion, please reduce the volume of background music. Thank you so much!
Thank you Nishi! I will definitely adjust the background music, appreciate your feedback!
Thank you!!! Finally I understand Blends in Tableau
Thank you 🙏
you don`t know how your solving my these issues so deeply.........love you always.
Thank you Nitesh!😀
Such a crisp n clear explanation Belle :) Thankyou for this !!!
Thank you Kirti! Glad you found the video helpful!
This is amazing. I am big fan of how you explain things so easily which makes everything so simple. Thanks a lot
Thank you Vicky!
Excellent! Excellent! Excellent!
Truly, the best video on Blend :)
Thank you very much for creating this video.
Thank you Neeraj!
This was really helpful. Thanks!
One small request. Since this is a video which is used by many as reference, would request you to please keep this updated as when Tableau makes any changes.
Thank you Aditya!
Thanks miss... I am really enjoying all your tutorials...
Thank you coco
Excellent video, you really explained very well what I was searching from a long time. Thanks a lot.
Thank you so much for this video. The explanation is so clear and I now completely understand how blend works.
So great to hear you found it helpful! Thank you for your comment Fiery!
Superb! Your explanation is super clear. I just start my new role as Analytics and watch many videos on youtube but your channel is super good!Thank you so much for great video and explanation. Love this channel!
Thank you Pum! I appreciate you rcomment, and happy to hear you found the video and the channel helpffil :)
I was searching for this kind of explanation from a month . Thanks a lot mam :)
Thank you Rohit! Hope you found the video helpful!
Just single word .. Excellent (100/100)
EXECLLENT video. Finally understand blends!
That was a clear video on the Blend topic. Thanks a lot.
Thank you MTG!
simply awesome way of explaining...expecting more from you in Tableau.
Thank you for your comment Ranjith, appreciate it! :)
You explained it very beautifully. Thank you for such a great video!
Thank you Abhishek! :) :) Happy to hear you found it helpful.
Absolutely beautiful video series 😍....A Must Watch Video series for beginners
Great, amazing explaination, very deep observations
You explained everything very clearly !! Thanks a lot .
Thank you Shilpa!
very precisely explained. Great work !
Thank you so much Gaurav!
Terrific content! Thank you sqlbelle
Thank you Thomas! Hope you found it helpful! :)
Thank you so much for the information! Straight to the point and very clear. New subscriber here :)
Thank you Jesus :)
Thank you so much.... Understood perfectly...!!! very well taught..
Great video, as always, sqlbelle!
Thank you for your support, as always, Andrew!
Thanks a lot, very clear. Now I know how to solve the issue I had!
That's great to hear Geraud, thank you for sharing!
Crisp and clear! Thanks!
Thank you Arun!
great explanation! Thanks😊
You are amazing. I’ve taken paid courses online and I didn’t get this level of explanation.
Thank you for your kind note Josh, and happy to hear it was helpful! :)
Amazing explanation. Thank you very much
Thank you Rasika!
Excellent content. Thank you.
Huge fan of all your videos. Learning conceptually all the Tableau concepts from all of your videos.Please keep up the good work!!!. Can you please share the excel file /dataset you have used in this video for me to practice.Just started with this video
Thank you for your kind comment Padma, and happy to hear you are finding the video useful.
Thanks a lot. Explanations are great. I'm gonna thank in each video I see in your channel. 💓💓
Thank you so much Apuroop! Much appreciated!
Very easy and understandable.
Thank you Aliyan!
i find this tutorial very useful
thank you
i went through a lot of videos in the process of getting certified. This video is one use case on when to use blend...and pretty much tells everything about it very well. What i am saying is there is no need to go searching for other explanations after seeing this. You are good!
Since you have done this so well...can you please do Tableau recommended other when to blend situations
- when Data needs cleaning
- when dealing with large amounts of data
You already did data at different aggregation level and also cross DB is not supported when Cubes are in picture of Salesforce Data.
Thank you so much for your comment and feedback Kiran! Happy to hear you found the video helpful! Appreciate your time and kind comment.
NICE Explanation ..
Wow exactly what I was looking for
Happy to hear that Maseed, thank you for sharing!
As always the best teacher ...thanks a lot a lot...very very usefullllll....
Thank you VDN, I am glad you found it useful! 😊
Simply Awesome! Please do more videos
Thank you Arun! 😀
How am I just discovering your amazing content! Thank you so much for the fantastic explanation!
Ps. There are those of us with a little sql knowhow but we just don’t know tableau…. it would be good if you used some of the language we are familiar with to help us recognize the topic.
For anyone reading … It helps me to think about blending as just a sub query in the select statement. the ‘linking fields’ are whatever you would have put in your group by clause if you were writing the query. and whatever fields you are getting from the secondary table have to be aggregated in the select statement so product name won’t work, but the measure count(distinct product_name) can be used. Get it?
Great tutorial! Thanks :)
Thank you Jakub!
awesome explanation.. very clear.. Keep it up
Thank you Abdul Khader! :)
Thanks Belle for providing great concept on these topics ....
Could you also provide the excel sheet here? So that i can just practice it to get some hands on experience.
A truly amazing explanation of blend functionality!!! However, the background music is way too loud and I find it distracting.
Thank you Tomix7777 - I appreciate the feedback, and yes I've removed the background music for the later tutorials. Unfortunately there isn't any way for me to just swap videos in YT once they're published. I will probably try to re-create some of the earlier tutorials without the background music.
love the explanations
Thank you Berry!
Simply awesome 👌
Thank you Mohammad
hats off to you man... thankyou so so much .. bless you !
Thank you Divyam!
Great videos.Thank you. I wanted to follow the videos in a Workshop. Could you please provide a link to your 2 XL datafiles. Thanks
Very helpful... thanks :)
thank you so much Mam also get many things to learn from you...i am very big fan of you and will be always :)
Thank you Peter. I am very grateful for your support - and please do not call me Mam 🙂 ..
Donabel
Great content! Thank You! Using your Blend example, how could I find out which customer has not bought a specific product yet? If I filter out the product on the secondary data source will it show me all the customers id who haven't bought this product yet?
Thank you so much !
Thank you, I hope you found it useful!
brilliant once again.
Thank you Russell!
You are fantastic!!
Thank you Andrew!
HI! I need to compare data from different sites (more than 5 data sources). Not data aggregation/blend/ relationship. Same data that comes from 5 sites. Example: A bar graph with 5 bars showing customer satisfaction for each site along each other. How can I do that?
Thank you so much!
Hi Sqlbelle. I follow your lessons regularly. A small request can you please do a lesson for Tableau Join
Thank you Simmu! I have a Part 2 which discusses Join - is this what you're looking for? th-cam.com/video/FtyVMvfzn1I/w-d-xo.html
Thank you for making such a great video. I think a big distinction between blend and join/relationship is the number of data sources. Blend requires at least two different data sources while join/relationship work on a single data source (but you can add multiple connections to it). When I started my Tableau journey, I was very confused about data sources and data connections. For example, if I have one Excel spreadsheet with two tabs, do I connect to it multiple times (each time is a new data source) or do I use join/relationship? Even if the data in these two tabs are not related in anyway, I can still create a dummy field in each tab and relate them. Or should I have two different Tableau workbooks, each workbook is for a different Excel tab? I hope the personal struggle I'm describing here makes sense. Anyways, regarding the material presented here, you highlighted the difference very well.
Thankyou so much ❤️
You’re welcome Fahad 😊
Hi Sqlbelle, how can we create 1 dimension out of 2 dimensions when given condition is data from 2 tables and output of one is true and another is false; need to make true false together ( tried sets, parameters, groups, calc but failed) is there any other alternate to do that. THANKS 😊,
Thanks madam for Amazing video
Thank you Naman!
Hello ma'am. As always , i enjoyed your lecture. It's informative , easily understandable. I recently came to know that there's a technique called domain padding which avoids suppression of rows. Kindly make a tutorial on this topic. It'll be a great help.
Thank you Bhagavathula for your comment and suggestion! I will definitely consider that for a future video. It may come in handy for an upcoming (advanced) table calculations video. Appreciate your support!
I have tremendous admiration for your work.. I have one small suggestion, please choose the background music which doesn't hinder our learning..previpis videos were perfect I had to struggle through this one...
Thank you so much for your support and kind comment, Saikat. I have received the same feedback and have removed background music in the later tutorials. Hope you will find the later tutorials much easier to listen to!
Great videos! I was confused by these three for a long time. A question: if I blend 3 tables, do I need to define the primary somewhere? or whatever I drag to the working sheet from the beginning becomes primary automatically? So it always left join when I blend them?
Thank you for your comment IFLY!
And to answer your question, with blends, the data source that owns the first field you drag onto your worksheet is always the primary, and it will always be a left join to that data source.
Hope this helps!
Where i can get the files for orders and order details for practice for blending in tableau. Any idea
👌👌👌👌👌 keep going on,pls take use cases also pls...
Pls.....pls....
Thank you venkat. Are there any specific use case you are looking for?
great video ............thank you so much..
Hope you found it useful Dipankar!
@@sqlbelle yes Mam...
that video is gold
Thank you TeddyAfro!
Hi is it possible to combine excel sheet and tableau server data source in tableau??
I want to inner join data from tableau server data and Excel data
this is great!
Thank you Indre!
Hi, your knowledge and explaination is excellent. Just one advice though- please do not add unnecessary background music, it is irritating. Thanks :)
Thank you, I appreciate your feedback. And yes I have removed background music from the newer tutorials based on similar feedback before. These were some of the earlier videos I created trying to navigate how to create content in TH-cam .. still living and learning :)
Hi Mam, is there any way to find out which dimensions and measures are used in a tableau file ?
hello sqlbelle.
it's amazing video and very clear explanation..
is it possible to blend from more than 2 data source ? maybe 3 or more data source..
thank you for sharing..
All videos are just amazing. Thank you so much :)
One doubt, sales and product name are from secondary table 'Customer Order'.
Sales value got aggregated per customer id and displayed correctly.
Why cant we combine all product name per customer id?
Hi Belle, Can you please send us a link to download the datasets?
Please make a video on Cross database join VS Blending
Thank you :)
you explained so well. I have one question, so blend is just about 2 data sources those 2 could be same or different.
Thank you Avantika. Blend needs at least 2 different data sources (could be more). The data sources could technically be the same file, but created twice as different data sources.
thank you for this vedio i learned so much from your channel and only a request could you please remove music in background..
Thank you so much Faisal! I have removed the background music in the later videos, hope you will find the later videos easier to listen to!
Great video.
I have customer data from many ERPs. Could I use tableau to somehow merge the similar customers on Name or Address? Or is such data mining best in SQL?
Hello,
Where possible, it is best to leave the data transformation work in the database or your ETL process. Usually Tableau will be one of many tools you will use to analyze and report out the data, so having this cleaned up and made available in a more central place will make it more scalable.
Also, having more data cleaning happening at the Tableau workbook level will mean your workbook will load more slowly.
Ultimately, there are many factors to be considered, but where possible we want to clean data at the source. If that's not possible, it is better to clean in a more central place/repository.
Hope this helps!
Donabel