Join and blend datasets

Join




You can join two datasets together using common columns using the Join transform. 

For example, consider a dataset which has the purchase data of a store and another dataset with their customer information. These datasets can be combined using a common column such as the customer ID to identify and match the records from both the datasets.

DataPrep offers all four types of joins: inner join, left join, right join, and outer join. Here's a quick video on how to use the Join transform.



To perform a join transform

1. In the DataPrep Studio page, click the Transform menu, click Combine , then select Join.

Info: You can also click the  icon or right-click the stage in the Pipeline builder and choose the Join transform.



2. In the Join dataset dialog, you can choose the dataset with which you are going to join the current dataset and the join type. 

3. Select the dataset that you want to join your current dataset with in the Choose a dataset to join drop-down. 

A new dataset will be created with the result of the join transform.



DataPrep automatically calculates and shows the Join potential between the current dataset and other datasets from your workspace. The join potential is shown in percentage, making it easier for you to choose a dataset for the Join transform. It is a calculation based on various factors like the amount of matching data in a column and matching column names between the datasets.

4. Choose the type of join using the Join type option. You can also change the type of join from the Join type menu in the Transform panel.



5.Enter a name for the new dataset in the New dataset name box in the Transform panel. 

6. Select the columns using which you want to join the two datasets i n the Matched columns section. 

Resolve repeated column names


7. Click the Preview button. The Resolve repeated column names dialog appears, if there are any columns with the same name in both the datasets that you're trying to join. You can rename or delete those columns and then proceed.

8. In the preview, you can unselect the columns that you do not want to include using the check boxes in the column headers.

9. Click Join to join the two datasets.



10. Once you've successfully joined the two datasets, you can click Open the joined dataset.

 

11. If you wish to view the join configuration, you can click open the Data source configuration from the Ruleset pane from the joined dataset. 


12. You can also click Edit join to update the join configuration.



Joins are typically used to combine two different datasets on the common items. Let's look into each type of join with an example. 

Inner join

An inner join combines two datasets using common columns and discards all the unmatched rows. 

The inner join is best represented as: 



Let us take the example of the following datasets. 

Orders dataset 



Customers dataset 



Order ID  is the common column here.  Inner join  has combined the rows of the two datasets that shared values in the Order ID column and discarded the unmatched values from both  Orders  and  Customers  datasets. 



Left join


A left join combines the current dataset with another dataset using common columns, and discards all unmatched rows from the other dataset.

Left join can be represented as: 



Let's take the example of the following datasets:

Orders daaset



Customers dataset



Left join  has combined the rows of the two datasets that shared values in the Order ID column. The unmatched values were only discarded from the Customers dataset. 



Right join 


A right join combines the current dataset with another dataset using common columns and discards all unmatched rows from the current dataset.
Right join can be represented as:



Let's take the example of the following datasets: 

Orders dataset



Customers dataset



Right join has combined the rows of the two datasets that shared values in the Order ID column. The unmatched values were only discarded from the Orders dataset. 


Outer join

Outer join uses common columns to combine two datasets, including the unmatched rows from both the datasets. An outer join can be represented as:



Let's take the example of the following datasets.

Orders dataset



Customers dataset



Outer join  has combined the rows of the two datasets that shared values in the Order ID column. The unmatched values are kept from both Orders and Customers datasets. 



SEE ALSO


    Access your files securely from anywhere

      Zoho CRM Training Programs

      Learn how to use the best tools for sales force automation and better customer engagement from Zoho's implementation specialists.

      Zoho CRM Training
        Redefine the way you work
        with Zoho Workplace

          Zoho DataPrep Personalized Demo

          If you'd like a personalized walk-through of our data preparation tool, please request a demo and we'll be happy to show you how to get the best out of Zoho DataPrep.

          Zoho CRM Training

            Create, share, and deliver

            beautiful slides from anywhere.

            Get Started Now


              Zoho Sign now offers specialized one-on-one training for both administrators and developers.

              BOOK A SESSION






                          Quick Links Workflow Automation Data Collection
                          Web Forms Enterprise Begin Data Collection
                          Interactive Forms Workplace Data Collection App
                          Offline Forms Customer Service Accessible Forms
                          Digital Forms Marketing Forms for Small Business
                          HTML Forms Education Forms for Enterprise
                          Contact Forms E-commerce Forms for any business
                          Lead Generation Forms Healthcare Forms for Startups
                          Wordpress Forms Customer onboarding Order Forms for Small Business
                          No Code Forms Construction RSVP tool for holidays
                          Free Forms Travel
                          Prefill Forms Non-Profit

                          Intake Forms Legal

                          Form Designer HR

                          Card Forms Food
                          Assign Forms Photography

                          Translate Forms Real Estate
                          Electronic Forms

                          Notification Emails for Forms Alternatives
                          Holiday Forms Google Forms alternative 
                          Form to PDF Jotform alternative





                                            You are currently viewing the help pages of Qntrl’s earlier version. Click here to view our latest version—Qntrl 3.0's help articles.




                                                Manage your brands on social media

                                                  Zoho Desk Resources

                                                  • Desk Community Learning Series


                                                  • Digest


                                                  • Functions


                                                  • Meetups


                                                  • Kbase


                                                  • Resources


                                                  • Glossary


                                                  • Desk Marketplace


                                                  • MVP Corner


                                                  • Word of the Day


                                                    Zoho Marketing Automation

                                                      Zoho Sheet Resources

                                                       

                                                          Zoho Forms Resources


                                                            Secure your business
                                                            communication with Zoho Mail


                                                            Mail on the move with
                                                            Zoho Mail mobile application

                                                              Stay on top of your schedule
                                                              at all times


                                                              Carry your calendar with you
                                                              Anytime, anywhere




                                                                    Zoho Sign Resources

                                                                      Sign, Paperless!

                                                                      Sign and send business documents on the go!

                                                                      Get Started Now




                                                                              Zoho TeamInbox Resources



                                                                                      Zoho DataPrep Resources



                                                                                        Zoho DataPrep Demo

                                                                                        Get a personalized demo or POC

                                                                                        REGISTER NOW


                                                                                          Design. Discuss. Deliver.

                                                                                          Create visually engaging stories with Zoho Show.

                                                                                          Get Started Now









                                                                                                              • Related Articles

                                                                                                              • Dataset transforms

                                                                                                                Dataset transform consists of combining and transforming datasets to suit your needs. You can apply the following transforms in a dataset. Deduplicate Row-wise Column-wise Join Append Pivot Unpivot Calculated columns Derive dataset Mark as personal ...
                                                                                                              • Derive dataset

                                                                                                                The Derive dataset transform allows you to create a branch of your dataset from the last applied transform in your dataset. The new dataset will have the most recent state of your data with an empty ruleset. To derive dataset 1. In the DataPrep ...
                                                                                                              • Append

                                                                                                                In DataPrep, you can append one dataset with another and create a new dataset using the Append transform. Here's a quick video on how to use the Append transform. To append datasets 1. In the DataPrep Studio page, click the Transform menu, click ...
                                                                                                              • Data preparation for Zoho Creator using DataPrep

                                                                                                                Zoho DataPrep is now integrated with Creator using Zoho Creator connector. The forms in Zoho Creator are used to collect and store data, serving as the main point of interaction between the created application and users. Zoho DataPrep allows you to ...
                                                                                                              • Creating custom data type

                                                                                                                Custom data types are used to validate organization-specific data, such as employee ID, invoice ID, shipment tracking ID, or asset ID. By creating a custom data type, you can set a standard for your organization-specific columns in your data. This ...
                                                                                                                Wherever you are is as good as
                                                                                                                your workplace

                                                                                                                  Resources

                                                                                                                  Videos

                                                                                                                  Watch comprehensive videos on features and other important topics that will help you master Zoho CRM.



                                                                                                                  eBooks

                                                                                                                  Download free eBooks and access a range of topics to get deeper insight on successfully using Zoho CRM.



                                                                                                                  Webinars

                                                                                                                  Sign up for our webinars and learn the Zoho CRM basics, from customization to sales force automation and more.



                                                                                                                  CRM Tips

                                                                                                                  Make the most of Zoho CRM with these useful tips.



                                                                                                                    Zoho Show Resources