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Lesson 7: Understanding query patterns

Overview

In this lesson, we’ll learn advanced aspects of building query patterns. We’ll begin by examining how TypeDB resolves patterns against the schema as constraint satisfaction problems. We’ll then examine some specific syntax elements we can use in patterns, including advanced relation patterns, logical operators, value comparisons, and value expressions. Finally, we’ll study the semantics of solution sets, to understand how the number of times a pattern is matched can affect the results of read and write queries.

  • You should complete Lesson 5 before starting this lesson.

TypeQL keywords introduced

  • or

  • not

  • is

  • like

  • contains

  • min

  • max

  • round

  • floor

  • ceil

  • abs

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