Column should be in group by clause

Reports columns that are not in the GROUP BY clause or inside an aggregate function call.

Example (Microsoft SQL Server):

CREATE TABLE t1 (a INT, b INT);
SELECT a, b FROM t1 GROUP BY a;

If you run the SELECT query, you will receive an error because Microsoft SQL Server expects the b column in GROUP BY or used inside an aggregate function. The following two examples will fix the error.

SELECT a, b FROM t1 GROUP BY a, b;
SELECT a, max(b) max_b FROM t1 GROUP BY a;

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

SqlShouldBeInGroupBy

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | SQL

Inspection Details
By default bundled with:	CLion 2024.3, DataGrip 2024.3, GoLand 2024.3, IntelliJ IDEA 2024.3, JetBrains Rider 2024.3, PhpStorm 2024.3, PyCharm 2024.3, Qodana for .NET 2024.3, Qodana for Go 2024.3, Qodana for JS 2024.3, Qodana for JVM 2024.3, Qodana for PHP 2024.3, Qodana for Ruby 2024.3, RubyMine 2024.3, WebStorm 2024.3
Can be installed with plugin:	Database Tools and SQL, 243.23140

Last modified: 03 December 2024