Question

我有一个返回下表的查询：

Year    IsFunded     NotFunded
2003    Null         4
2003    3            Null
2004    Null         2
2004    8            Null

所以我需要：

SELECT Year, IsFunded, NotFunded
FROM
(
    --myQuery that returns unflattened results
)

我每年只需要一排。像：

Year    IsFunded     NotFunded
2003    3            4
2004    8            2

Answer 1

使用GROUP BY和MAX：

SELECT t.Year, MAX(t.IsFunded) AS IsFunded, MAX(t.NotFunded) AS NotFunded
FROM 
(
    --myQuery that returns unflattened results
) AS t
GROUP BY t.Year;

如何从SQL查询中展平结果？

1 个答案: