postgresql/prefer-in-list-over-or

Why this matters

`IN (...)` is shorter, easier to read, and gives the planner a single set instead of N disjunctions. The rule only collapses chains where every disjunct is an equality on the same left-hand side; mixed predicates are out of scope.

Examples

SELECT * FROM t WHERE x = 1 OR x = 2 OR x = 3;

SELECT * FROM t WHERE x IN (1, 2, 3);

SELECT * FROM t WHERE x = 1 OR y = 2; -- mixed lhs: not in scope

Configure it

// eslint.config.js
import postgresql from "eslint-plugin-postgresql";

export default [
  {
    files: ["**/*.sql"],
    languageOptions: {
      parser: postgresql.configs.recommended.languageOptions.parser,
    },
    plugins: { postgresql },
    rules: {
      "postgresql/prefer-in-list-over-or": "warn",
    },
  },
];

Options

This rule has no options.