clickhouse报错 Column time is not under aggregate function and not in GROUP BY
时间: 2024-05-04 22:15:10 浏览: 484
这个错误通常是由于查询语句中使用了聚合函数,但是没有在GROUP BY子句中包含所有非聚合列。解决方法是将所有非聚合列添加到GROUP BY子句中。
例如,以下查询语句会导致该错误:
```
SELECT time, COUNT(*) FROM my_table
```
因为在SELECT子句中使用了聚合函数COUNT(*),但是没有包含time列在GROUP BY子句中。
正确的查询语句应该是:
```
SELECT time, COUNT(*) FROM my_table
GROUP BY time
```
这样就可以正确地聚合数据并避免该错误。
相关问题
ClickHouse exception, code: 215, host: 123.249.3.11, port: 8123; Code: 215, e.displayText() = DB::Exception: Column `sales` is not under aggregate function and not in GROUP BY: While processing period_code, formatDateTime(parseDateTimeBestEffort(period_start), '%Y') AS years, product_name AS product, sum(sales), sum(sales) OVER (PARTITION BY years ORDER BY period_code DESC ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS sale (version 21.3.4.25)
这个异常提示指出了问题所在:`Column 'sales' is not under aggregate function and not in GROUP BY`。这意味着你的查询中包含了未被聚合函数或 GROUP BY 子句包含的列。
同时,你在查询中也使用了窗口函数 `sum(sales) OVER (PARTITION BY years ORDER BY period_code DESC ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS sale`,这可能会导致 ClickHouse 引擎无法正确处理这个查询。
要解决这个问题,你需要将所有未被聚合函数或 GROUP BY 子句包含的列都包含在窗口函数中,或者将窗口函数和聚合函数分别使用。以下是一个修改后的示例:
```
SELECT formatDateTime(parseDateTimeBestEffort(period_start), '%Y') AS years,
product_name AS product,
sum(sales) AS total_sales,
sum(sales) OVER (PARTITION BY formatDateTime(parseDateTimeBestEffort(period_start), '%Y') ORDER BY period_code DESC ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS running_total_sales
FROM your_table
GROUP BY years, product;
```
在这个查询中,我们将 `formatDateTime(parseDateTimeBestEffort(period_start), '%Y')` 列包含在了窗口函数中,并使用了 GROUP BY 子句。这样,你就可以正确地计算每个产品每年的销售总额和累计销售总额了。
sql报错Column 'uf_XMYSHZ_dt1.ysyysje' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY claus
这个错误信息是因为在SELECT语句中同时使用了聚合函数和非聚合函数,但没有在GROUP BY子句中将非聚合函数进行分组。解决方法是将非聚合函数也添加到GROUP BY子句中,或者使用聚合函数对非聚合函数进行计算。例如:
错误示例:
```
SELECT name, SUM(salary), age FROM employee
GROUP BY age;
```
正确示例:
```
SELECT name, SUM(salary), age FROM employee
GROUP BY name, age;
```
或者:
```
SELECT MAX(name), SUM(salary), MAX(age) FROM employee;
```
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