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. Click the Transform menu, click Combine , then select Join . 

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. 

7. Click the Preview button. The Resolve repeated column names dialog appears, if there are any columns with the same name. You will have to rename them to resolve duplicate columns.

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


    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
      Start your free trial

        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





                        Still can't find what you're looking for?

                        Write to us:  support@zohoforms.com


                                


                            





                          Manage your brands on social media
                          Access Zoho Social





                              Zoho Marketing Automation

                                Zoho Sheet Resources

                                 




                                    Zoho Forms Resources


                                      Features

                                      Form Templates

                                      Customers

                                      Mobile Forms

                                      Pricing

                                      Integrations

                                      Blogs

                                      Ebooks

                                      Tips & Tricks

                                      Community

                                      Terms of Use

                                      Secure your business
                                      communication with Zoho Mail
                                      Get started


                                      Mail on the move with
                                      Zoho Mail mobile application
                                      Go Mobile

                                        Stay on top of your schedule
                                        at all times
                                        Get started


                                        Carry your calendar with you
                                        Anytime, anywhere
                                        Get started


                                          Latest Announcements


                                              Zoho Sign Resources

                                                What's new
                                                Help Guide
                                                Solutions Guide
                                                API
                                                Blogs
                                                FAQ's
                                                Legal Guide
                                                Forums
                                                Webinars

                                                Sign, Paperless!

                                                Sign and send business documents on the go!

                                                Get Started Now


                                                    Zoho SalesIQ Resources


                                                        Zoho TeamInbox Resources



                                                              Latest Feature Updates

                                                                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





                                                                            Setup Zoho Bigin in 30 Minitues
                                                                            Latest Feature Updates


                                                                                Latest Feature Updates



                                                                                          • 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. Click the Transform ...

                                                                                          • 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. Click the Transform menu, click Combine , then select Append . 2. ...

                                                                                          • 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 ...

                                                                                          • Mark as personal data

                                                                                            You can mark a column that contains personal data using the Mark as personal data option. You can also apply security methods on the column to protect your data and choose to include or exclude this column during export. To mark columns with PII data ...
                                                                                          Wherever you are is as good as
                                                                                          your workplace
                                                                                          Workplace on mobile

                                                                                            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