Code Inspection: 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):
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.
Suppress an inspection in the editor
Position the caret at the highlighted line and press Alt+Enter or click .
Click the arrow next to the inspection you want to suppress and select the necessary suppress action.