最近十个月工资的平均值

Question

我的数据如下：

year    month   Amount 
2012    4   7443.00
2012    5   7443.00
2012    6   7443.00
2012    7   7443.00 
2012    8   7443.00 
2012    9   7443.00 
2012    10  7443.00 
2012    11  7443.00 
2012    12  7443.00 
2013    1   7443.00
2013    2   7443.00
2013    3   9828.00
2013    4   8238.00
2013    5   8238.00
2013    6   8238.00
2013    7   8238.00
2013    8   8238.00
2013    9   8238.00
2013    10  8238.00
2013    11  8238.00
2013    12  8238.00

我想要最近十个月的平均金额。 提前致谢

Answer 1

这是ms-server的sql：

SELECT TOP 10 year, month, amount FROM your_table_name 
WHERE amount >(SELECT AVG(amount ) FROM your_table_name)
ORDER BY year, month DESC;

[ www.w3schools.com/sql/sql_func_last.asp ] This site page gives you an overview of how to get around with your code

---

请试试这个。我没试过它。

SELECT TOP 10 year, month, amount FROM your_table_name 
WHERE amount >(SELECT AVG(amount) AS AverageAmount FROM your_table_name)
ORDER BY year, month DESC;