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Last updated:

July 7, 2022

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Description

Introduction to databases, SQL - Recursion, course tutorial, PDF file by Jun Yang, Brett Walenz.

Contents

  • A motivating example
  • Recursion in SQL, Ancestor query in SQL3
  • Fixed point of a function
  • Fixed point of a query, Finding ancestors
  • Intuition behind fixed-point iteration
  • Linear recursion, Linear vs. non-linear recursion
  • Mutual recursion example
  • Semantics of WITH
  • Computing mutual recursion
  • Fixed points are not unique
  • Mixing negation with recursion
  • Fixed-point iter may not converge
  • Multiple minimal fixed points
  • Legal mix of negation and recursion
  • Stratified negation example
  • Evaluating stratified negation

Summary on tutorial SQL: Recursion

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SQL: Recursion. help on the contact form if problems

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Course Curriculum

  • SQL: Recursion 05:00:00

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