不是 Group By 表达式：不清楚如何解决该问题

Question

我不确定这里的主要问题，我相信我的代码是正确的，但我不知道如何解决“ORA-00979：不是 GROUP BY 表达式”的问题。

SELECT distinct customer_city, customer_state, COUNT(*)
FROM customers
WHERE customer_state not in ('TX', 'OR')
GROUP BY ROLLUP(customer_state);

Answer 1

"distinct" 不适用于组表达式；您的“分组依据”子句需要包含所有 non-grouped 列。试试这个：

SELECT customer_city, customer_state, COUNT(*)
FROM customers
WHERE customer_state not in ('TX', 'OR')
GROUP BY ROLLUP (customer_city, customer_state);

Answer 2

所选列必须是 ROLL UP 中分组依据的一部分，如下所示。

SELECT customer_city, customer_state, COUNT(*)
  FROM customers
 WHERE customer_state not in ('TX', 'OR')
GROUP BY ROLLUP(customer_city, customer_state);

不是 Group By 表达式：不清楚如何解决该问题

Not a Group By expression : Unclear on how to fix the issue

sql

database

oracle

oracle-sqldeveloper