postgresql/no-having-without-group-by

Why this matters

PostgreSQL accepts `HAVING` without `GROUP BY` and collapses the query to a single aggregate row over the whole table — almost never what the author meant. If the predicate is row-level, put it in `WHERE`. If it's aggregate-level, add a `GROUP BY`.

Examples

SELECT count(*) FROM users HAVING count(*) > 1;

SELECT category, count(*) FROM items GROUP BY category HAVING count(*) > 1;

SELECT count(*) FROM users WHERE active;

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/no-having-without-group-by": "error",
    },
  },
];

Options

This rule has no options.