mysql - 汇总子句的语法错误

Question

下面是我正在编写的查询，但由于某种原因，它在“ROLLUP”这个词之后给了我一个语法错误，红色的小波浪线在“（”之后）在汇总之后。

SELECT building, room_number, time_slot_id, COUNT(*)
FROM class1
GROUP BY ROLLUP (building, room_number, time_slot_id)

Answer 1

你需要With Rollup在group by. 试试这个语法

SELECT building, room_number, time_slot_id, COUNT(*)
FROM class1
GROUP BY building, room_number, time_slot_id WITH ROLLUP 

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