我在一个表中有多个列,但我只希望在sql中选择列中的最高值。
示例信息:
D1 D2 D3 D4
----- ----- ----- -----
3 2 150 5
1 3 20 10
输出需要:
MaxPower
150
20
有人知道这样做的好方法吗?一个单一的sql是可取的,但是vba也可以。
我在一个表中有多个列,但我只希望在sql中选择列中的最高值。
示例信息:
D1 D2 D3 D4
----- ----- ----- -----
3 2 150 5
1 3 20 10
输出需要:
MaxPower
150
20
有人知道这样做的好方法吗?一个单一的sql是可取的,但是vba也可以。
select max(v) as maggiore from (
select id,d1 as v from table
union all
select id,d2 from table
union all
select id,d3 from table
union all
select id,d4 from table
) as t
group by id
从表
中选择max(max(d1,d2),max(d3,d4))如何?
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