rollup子句的语法错误

Question

下面是我正在写的查询，但由于某种原因，它在“ROLLUP”一词之后给出了一个语法错误，小红色波浪线在'（'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

您需要在With Rollup中使用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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