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SAS Certified Professional Prep Guide
book

SAS Certified Professional Prep Guide

by SAS Institute
October 2019
Intermediate to advanced content levelIntermediate to advanced
430 pages
19h 4m
English
SAS Institute
Content preview from SAS Certified Professional Prep Guide

Using the UNION Set Operator

A Brief Overview

The set operator UNION does both of the following:
  • selects unique rows from both tables
  • overlays columns
Figure 4.5 UNION Set Operator Relationship
UNION Set Operator Relationship

Example: Using the UNION Operator Alone

To display all rows from the tables Col1 and Col2 that are unique in the combined set of rows from both tables, use a PROC SQL set operation that includes the UNION operator.
proc sql;
   select *
      from certadv.col1 union
   select *
      from certadv.col2;
quit;
Output 4.16 PROC SQL Query Result Illustration
With the UNION operator, PROC SQL first concatenates and sorts the rows from the two ...
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Publisher Resources

ISBN: 9781642954692