postgresql/no-group-by-ordinal

Why this matters

Same fragility as positional `ORDER BY`: reordering the SELECT list silently shifts the grouping to a different column, producing plausible-looking but wrong aggregates. Reference the column by name or by the grouping expression.

Examples

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

SELECT region, category, sum(amount) FROM sales GROUP BY 1, 2;

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

SELECT region, category, sum(amount) FROM sales GROUP BY region, category;

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-group-by-ordinal": "warn",
    },
  },
];

Options

This rule has no options.