Transcription of 249-30: Merging versus Joining: Comparing the DATA Step ...
{{id}} {{{paragraph}}}
Example: bachelor of science
249-30: Merging versus Joining: Comparing the DATA Step ...
SUGI 30 Tutorials Paper 249-30. Merging vs. JOINING: Comparing the DATA Step with SQL. Malachy J. Foley University of North Carolina at Chapel Hill, NC. ABSTRACT. Which merges files better: the SAS DATA Step or SAS SQL? Traditionally, the only way to merge files in SAS was via the SAS DATA Step. Now SAS provides a Structured Query Language (SQL) facility which also merges files. This tutorial compares and contrasts these two merge facilities. It examines the pros and cons of each merge technique. It looks at DATA Step code to perform specific merges and then looks at the corresponding SQL. code to perform the same merges. INTRODUCTION. This tutorial is a SQL primer for the SAS user with some experience with SAS DATA Steps and the merge .
It focuses on merging or joining two data sets in any combination with either the DATA Step or SQL. Upon completing the paper, the reader should have a good grasp of how SQL compares to match-merge. THE DEFAULT MATCH-MERGE There are many definitions for merge. All of them talk about taking two or more sorted input files and combining
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: