Combining and Updating Data Sets

Combining and Updating Data Sets presents various methods for combining and updating existing SAS data sets.

SAS Programming
Getting Started

Using SAS

Data Manipulation

DATA Step Programming

Results

Display Manager System

Data Libraries

Inputting Data and PROC SQL

Combining and Updating Data Sets

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This Combining and Updating Data Sets course is for end users, programmers and business professionals who have an introductory level of experience with SAS. Our Combining and Updating Data Sets training course offer unique benefits unavailable from other self-paced training vendors. Each course is developed using a rigorous set of criteria that includes quality content, interaction, graphics, and interspersed questions, making learning fun, interesting, and effective.

• Create new data sets through concatenating, interleaving or merging observations
• Update a master data set with values from a transaction data set
• Manipulate a SAS data set in place
• Read a data set twice
• Determine the source of an observation
• Combine portions of data sets
• Read only certain observations
• Access observations nonsequentially

• Concatenating Data Sets
  • Using the SET statement
  • Using PROC APPEND
  • Using SET vs. APPEND

• Interleaving and Merging Data Sets
  • Interleaving
  • One-to-one merging
  • Match merging

• Updating with UPDATE
  • Simple updates
  • Missing values
  • Processing updates
  • Changing values to missing
  • Summing values
  • Aging data set files

• Updating with MODIFY
  • Updating a data set in place
  • Summing values
  • MODIFY vs. UPDATE
  • Refining MODIFY statements
  • Implications of updating in place

• Using Other Techniques
  • Reading a data set twice
  • Determining the source of an observation
  • Combining portions of data sets
  • Reading only certain observations
  • Accessing observations nonsequentially

• Instructional steps -- walk through a procedure
• Exercises -- try it out
• Notes - See additional information related to the topic in the text
• Tips - See a different, faster, or easier way of doing something
• Quick References - See a quick reference guide to the features introduced in a chapter
• Details - Display more detailed information related to the current topic
• Hotwords - See related information
• Navigation Bar - Maneuver easily through the courses
• Topics and Index -- with searching feature and hyper-links
• Printable Exercises - PDF downloadable files
• Sample Application Files - PDF downloadable files
• Skill Assessment - can be used for pre and post-testing -- tracking first try, best try and grade - if passed, green check mark will appear as 'mastered' - hyperlinks to units within the course to go back and re-take a certain unit again. Use as pre-test to determine which topics you want to focus on and to go directly into that unit.

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