16Hierarchical Retrieval
CERTIFICATION OBJECTIVES
16.01 Interpret the Concept of a Hierarchical Query
16.02 Create and Format Hierarchical Data
16.03 Exclude Branches from the Tree Structure
This chapter discusses the hierarchical query which is based on data structured in a self-join table or view. The hierarchical query uses clauses in the SELECT statement to create a dynamic, tree-structured report appropriate for corporate organization charts, a distribution chain, family genealogy research, or any situation that requires a multilevel data structure.
CERTIFICATION OBJECTIVE 16.01Interpret the Concept of a Hierarchical ...
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