Data Management Solutions Using SAS Hash Table Operations

Chapter 1: Hash Object Essentials

1.1 Introduction

1.2 Hash Object in a Nutshell

1.3 Hash Table

1.4 Hash Table Properties

1.4.1 Residence and Volatility

1.4.2 Hash Variables Role Enforcement

1.4.3 Key Variables

1.4.4 Program Data Vector (PDV) Host Variables

1.5 Hash Table Lookup Organization

1.5.1 Hash Table Versus Indexed SAS Data File

1.6 Table Operations and Hash Object Tools

1.6.1 Tasks, Operations, Environment, and Tools Hierarchy

1.6.2 General Data Table Operations

1.6.3 Hash Object Tools Classification

1.6.4 Hash Object Syntax

1.6.5 Hash Object Nomenclature

1.7 Peek Under the Hood

1.7.1 Table Organization and Unindexed Key Search

1.7.2 Internal Hash Table Structure

1.7.3 Hashing Scheme

1.7.4 Hash Function

1.7.5 Hash Table Structure and ...