更新时间：2024-04-18 GMT+08:00
GROUP BY转换
MySQL/ADB 分组查询的时候允许查询非分组字段，不报错；DWS分组查询时只能查询分组字段和聚集函数，报错。因此补齐没有group by的查询分组字段。
输入示例
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SELECT e.department_id, department_name, ROUND(AVG(salary), 0) avg_salary FROM employees e JOIN departments d on e.department_id = d.department_id GROUP BY department_name ORDER BY department_name; |
输出示例
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SELECT e.department_id, department_name, ROUND (AVG(salary), 0) AS "avg_salary" FROM employees "e" JOIN departments "d" ON e.department_id = d.department_id GROUP BY department_name, 1 ORDER BY department_name; |
父主题： SELECT
