Syntax Error

What This Error Means

This error occurs when a SELECT statement includes a column that is not included in the GROUP BY clause, or when a SELECT statement includes an aggregate function without grouping the data.

Why It Happens

This error typically happens when a query is trying to select a column that has been modified by an aggregate function, but the column is not included in the GROUP BY clause. This can also occur when a query is trying to select a column that has been modified by a window function, but the column is not included in the OVER clause.

How to Fix It

1. 1To fix this error, you need to either include the column in the GROUP BY clause, or use a subquery to group the data before selecting the column. Alternatively, you can use a window function that allows you to select the column without grouping the data, such as ROW_NUMBER() or RANK().

Example Code Solution

SELECT id, SUM(salary) as total_salary FROM employees GROUP BY id, name;

SELECT id, name, SUM(salary) as total_salary FROM (SELECT id, name, salary FROM employees) GROUP BY id, name;