我需要执行平均值。弄清楚如何编写子查询,但最终函数抛出两个错误。第15行然后第1行语法错误。
子查询有效。然后我只需要平均同一类别的产品平均值。缺少什么?
SELECT
c."name",
AVG(avgvalue)
FROM
(SELECT
c.name,
p.name,
AVG(a."value") AS avgvalue
FROM
answers a
INNER JOIN
survey_responses sr ON sr.id = a.survey_response_id
AND a.question_id = 13
INNER JOIN
answers category_answer ON category_answer.survey_response_id = sr.id
AND category_answer.question_id = 264
INNER JOIN
answers_categories ac ON category_answer.id = ac.answer_id
INNER JOIN
categories c ON c.id = ac.category_id
INNER JOIN
products p ON p.id = a.product_id
WHERE
c.name IN ('Accounting')
HAVING
count(p.name) > 10) AS ProductAverages
GROUP BY c.NAME
答案 0 :(得分:1)
在临时表
中的;
子句后删除HAVING
HAVING count(p.name)>10