Question

我正在尝试显示某段时间内的报价数量，将每个报价的总和相加，并由创建报价的人对它们进行分组。以下是我的查询...但我认为我正在对该组做错事，但我不知道是什么。我正在使用标准的SQL 2008.非常感谢任何帮助。

SELECT 
    CAST(COUNT (DISTINCT QUOTES.Quote) AS SQL_CHAR) AS Number_of_Quotes, 
    SUM(Forecast) AS Amount_Forecast, 
    quotes.createdby
FROM 
    Quotes   
WHERE 
    quotes.created>=? AND quotes.created<=?
Group by 1

Answer 1

您的错误是由于您按聚合分组。您可以按列编号进行分组，但第一列包含count（）。

您可以将1更改为3，也可以使用列名。

Answer 2

您需要在分组

中使用createdby

SELECT 
    CAST(COUNT (DISTINCT QUOTES.Quote) AS SQL_CHAR) AS Number_of_Quotes, 
    SUM(Forecast) AS Amount_Forecast, 
    quotes.createdby FROM Quotes
WHERE 
    quotes.created>=? AND quotes.created<=? 
Group by createdBy

Answer 3

在GROUP BY子句中，您必须包含SELECT子句中的列。

如果您想根据谁创建预测来汇总预测，您应该像@Sachin和@Dan Bracuk那样推荐：

SELECT 
    CAST(COUNT (DISTINCT QUOTES.Quote) AS SQL_CHAR) AS Number_of_Quotes, 
    SUM(Forecast) AS Amount_Forecast, 
    quotes.createdby 
FROM quotes
WHERE 
    quotes.created>=? AND quotes.created<=? 
GROUP BY quotes.createdby

或

SELECT 
    CAST(COUNT (DISTINCT QUOTES.Quote) AS SQL_CHAR) AS Number_of_Quotes, 
    SUM(Forecast) AS Amount_Forecast, 
    quotes.createdby 
FROM quotes
WHERE 
    quotes.created>=? AND quotes.created<=? 
GROUP BY 3  --equivalent because createdBy is the 3º column on the select clause

SQL查询组由麻烦

3 个答案: