← All recipes
Moderne licensed

Find cartesian joins

Recipe IDorg.openrewrite.sql.antipattern.FindCartesianJoin
Artifactorg.openrewrite.recipe:rewrite-sql

Joins that lack a real linking predicate multiply row counts instead of matching related rows: an ON condition comparing a column to itself is always true, and comma-separated tables with no WHERE predicate relating them pair every row with every row. Explicit CROSS JOIN and NATURAL joins are treated as intentional and are not flagged.

Single recipeProprietary

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe org.openrewrite.sql.antipattern.FindCartesianJoin

If the recipe isn’t available locally, install it with:

mod config recipes jar install org.openrewrite.recipe:rewrite-sql:2.14.1

Data tables

Structured output this recipe can produce.

  • SQL anti-patternsSQL statements matching performance anti-pattern rules.org.openrewrite.sql.table.SqlAntiPatterns
  • Source files that had resultsSource files that were modified by the recipe run.org.openrewrite.table.SourcesFileResults
  • Source files that had search resultsSearch results that were found during the recipe run.org.openrewrite.table.SearchResults
  • Source files that errored on a recipeThe details of all errors produced by a recipe run.org.openrewrite.table.SourcesFileErrors
  • Recipe performanceStatistics used in analyzing the performance of recipes.org.openrewrite.table.RecipeRunStats