Concatenates values within a group into a single string.
Syntax
GROUP_CONCAT([DISTINCT] expr [ORDER BY ...] [SEPARATOR sep])Example
Enter values below to update the example in real time.
department_id→last_name→SEPARATOR→members→employees→-- 부서별 직원 이름 목록
SELECT department_id,
GROUP_CONCAT(last_name ORDER BY last_name SEPARATOR ', ') AS members
FROM employees
GROUP BY department_id;