postgresql/prefer-explicit-null-ordering

Why this matters

PostgreSQL's null-ordering defaults (NULLS LAST for ASC, NULLS FIRST for DESC) match the SQL spec but contradict every other major engine. Adding explicit `NULLS FIRST/LAST` removes the surprise and survives copy-paste into other databases.

Examples

SELECT id FROM users ORDER BY created_at DESC;

SELECT id FROM users ORDER BY created_at DESC NULLS LAST;

SELECT id FROM users ORDER BY created_at;

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-explicit-null-ordering": "warn",
    },
  },
];

Options

This rule has no options.