September 2004
Beginner to intermediate
388 pages
6h 34m
English
Content preview from PROC SQL: Beyond the Basics Using SAS®
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Chapter 7. Coding Complex Queries
| 7.1 | Introduction 204 |
| 7.2 | Introducing Complex Queries 204 |
| 7.3 | Joins 205 |
| 7.3.1 Why Joins Are Important 205 | |
| 7.3.2 Information Retrieval Based on Relationships 206 | |
| 7.3.3 Types of Complex Queries 206 | |
| 7.4 | Cartesian Product Joins 208 |
| 7.5 | Inner Joins 209 |
| 7.5.1 Equijoins 209 | |
| 7.5.2 Non-Equijoins 212 | |
| 7.5.3 Reflexive or Self Joins 213 | |
| 7.5.4 Using Table Aliases in Joins 216 | |
| 7.5.5 Performing Computations in Joins 217 | |
| 7.5.6 Joins with Three Tables 218 | |
| 7.5.7 Joins with More Than Three Tables 220 | |
| 7.6 | Outer Joins 223 |
| 7.6.1 Left Outer Joins 224 | |
| 7.6.2 Right Outer Joins 227 | |
| 7.6.3 Full Outer Joins 228 | |
| 7.7 | Subqueries 230 |
| 7.7.1 Alternate Approaches to Subqueries 230 | |
| 7.7.2 Passing a Single Value with a Subquery 232 | |
| 7.7.3 Passing More Than One Row ... |
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