SASCRUNCH TRAINING
  • Home
  • SASĀ® Certification Training
    • SAS Certified Specialist Exam Training Program
    • How to Prepare For SAS Certified Specialist Base Programming Exam
  • Online Courses
    • Practical SAS Training Course for Beginners
    • Proc SQL Course
    • SAS Project Training Course
    • Logistic Regression (Credit Scoring) Modeling using SAS
  • Articles
    • Get Started >
      • 18 Free Resources to Help You Learn SAS
      • SAS Tutorial
      • How to Install SAS Studio
      • How to Learn SAS Fast
    • Data Import >
      • Importing Excel Spreadsheet
      • Importing CSV Files
      • Importing Text Files
    • SAS Functions >
      • CAT, CATT, CATS, CATX Functions
      • If-Then-Else statement
      • TRIM Function
      • STRIP Function
      • YEAR, MONTH, DAY Functions
      • Compress Function
      • Do-Loop
      • SCAN Function
      • LIKE Operator
      • INDEX Function
    • Data Manipulations >
      • The Ultimate Guide to Proc SQL
      • Proc Datasets
      • Dictionary Tables
      • Dealing with Missing Values
      • Proc Compare
      • Proc Transpose
      • RETAIN Statement
      • SAS Formats
      • SAS Arrays
    • Statistical Analysis >
      • Proc Means
      • Proc Freq
      • Proc Tabulate
    • Machine Learning >
      • Predicting Fish Species Using K-nearest Neighbor in SAS
      • Classify Product Reviews on Amazon Using Naive Bayes Model in SAS
    • Informational Interviews >
      • How to get a Clinical Trial/Research job without experience
      • Senior Recruiter at a Fortune 500 Retail Company
      • Manager, Non-profit Health Services Research
      • HR Manager
      • Quantitative Analyst
  • Services
    • The Ultimate Job Search Automation Services
    • Statistical Consulting
    • SAS Project or Assignment Help
    • Data Import Services
    • Data Manipulation and Reporting Services
  • In-class Training
    • SAS Training for Job Seekers
  • Guest Lecture
  • Sample Resume
  • About us
  • Contact Us
Master SAS
​in 30 Days
Start your Free training now!
x
Picture
Need help studying for the new
SAS Certified Specialist Exam?
Get access to:
  • Two Full Certificate Prep Courses
  • ​300+ Practice Exercises
Start your free training now
How to Prepare for the SAS Certified Specialist Base Programming Exam
Picture
 
Lesson 4.2: Merging datasets
IMPORTANT! We have recently updated our training materials. Check out the latest free training here. 


Merging is another data manipulation step that is frequently used in SAS.  

Example

There are two datasets here: GMAT and ATTEMPT. GMAT contains the students’ GMAT results and ATTEMPT contains the number of attempts for each student. Let’s merge these two datasets.


Picture
Picture
DATA Profile;

MERGE GMAT ATTEMPT;
BY STUDENT;


RUN;
Picture
(1) This step indicates which two datasets to be merged.

(2) THIS IS IMPORTANT! This "BY" statement identifies the common variables to merge. It is to ensure the two datasets are merged correctly. In this example, we want the common variable to be STUDENT so that John’s GMAT result will be merged with John’s number of GMAT attempts. You do not want to mix up John’s result with Amy’s attempts.

Now, let’s take a look at the log window. 
Picture
There is an error. The datasets are not sorted properly! SAS is not smart enough to sort the datasets prior to merging so we need to do a manual sorting before merging the two datasets. 

PROC SORT data=GMAT; By Student; Run;
PROC SORT data=ATTEMPT; By Student; Run; 
Picture
Picture
Now, we merged them and let’s take another look at the log window.  


DATA Profile;

MERGE GMAT ATTEMPT;
BY STUDENT;

RUN; 

Picture
Picture

DONE! You have learned how to merge two SAS datasets. 

Previous
Next

    Have a Question?

Submit
 

Master SAS in 30 Days

Start your Free training now!
Copyright © 2012-2019 SASCrunch.com All rights reserved.
  • Home
  • SASĀ® Certification Training
    • SAS Certified Specialist Exam Training Program
    • How to Prepare For SAS Certified Specialist Base Programming Exam
  • Online Courses
    • Practical SAS Training Course for Beginners
    • Proc SQL Course
    • SAS Project Training Course
    • Logistic Regression (Credit Scoring) Modeling using SAS
  • Articles
    • Get Started >
      • 18 Free Resources to Help You Learn SAS
      • SAS Tutorial
      • How to Install SAS Studio
      • How to Learn SAS Fast
    • Data Import >
      • Importing Excel Spreadsheet
      • Importing CSV Files
      • Importing Text Files
    • SAS Functions >
      • CAT, CATT, CATS, CATX Functions
      • If-Then-Else statement
      • TRIM Function
      • STRIP Function
      • YEAR, MONTH, DAY Functions
      • Compress Function
      • Do-Loop
      • SCAN Function
      • LIKE Operator
      • INDEX Function
    • Data Manipulations >
      • The Ultimate Guide to Proc SQL
      • Proc Datasets
      • Dictionary Tables
      • Dealing with Missing Values
      • Proc Compare
      • Proc Transpose
      • RETAIN Statement
      • SAS Formats
      • SAS Arrays
    • Statistical Analysis >
      • Proc Means
      • Proc Freq
      • Proc Tabulate
    • Machine Learning >
      • Predicting Fish Species Using K-nearest Neighbor in SAS
      • Classify Product Reviews on Amazon Using Naive Bayes Model in SAS
    • Informational Interviews >
      • How to get a Clinical Trial/Research job without experience
      • Senior Recruiter at a Fortune 500 Retail Company
      • Manager, Non-profit Health Services Research
      • HR Manager
      • Quantitative Analyst
  • Services
    • The Ultimate Job Search Automation Services
    • Statistical Consulting
    • SAS Project or Assignment Help
    • Data Import Services
    • Data Manipulation and Reporting Services
  • In-class Training
    • SAS Training for Job Seekers
  • Guest Lecture
  • Sample Resume
  • About us
  • Contact Us