April 2006
Intermediate to advanced
640 pages
16h 46m
English
Content preview from Inside Microsoft® SQL Server™ 2005: T-SQL QueryingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 9. Graphs, Trees, Hierarchies, and Recursive Queries
This chapter covers treatment of specialized data structures called graphs, trees, and hierarchies in Microsoft SQL Server using T-SQL. Of the three, probably the most commonly used among T-SQL programmers is hierarchy, and this term is sometimes used even when the data structure involved is not really a hierarchy. I’ll start with a terminology section describing each data structure to clear the confusion.
Treatment (representation, maintenance, and manipulation) of graphs, trees, and hierarchies in an RDBMS is far from trivial. I’ll discuss two main approaches, one based on ...
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