我想用aggragate函数创建我的表的摘要,例如max,min,avg 查询是这样的
select 'avg',avg(column1) as 'avg_resp',avg(col2) as 'ncount' from table
union all
select 'max',max(column1),max(col2) from table
union all
select 'min',min(column1),min(col2) from table;
能以更好的方式完成吗? PS:我想将它用于REST API,所以我试图不转置/延长最终结果。
我当前代码中的REST API模型:
{
avg_resp:[min,max,avg],
ncount: [min,max,avg]
}
答案 0 :(得分:1)
为什么不:
select
avg(column1) as 'avg_resp',
avg(col2) as 'ncount',
max(column1) AS Max1,
max(col2) AS MAx2,
min(column1) AS Min1,
min(col2) AS Min2
from table
答案 1 :(得分:1)
您可以将所有内容放在一个选择语句中
select avg(column1) as avg_resp,
avg(col2) as ncount,
max(column1) as max_col1,
max(col2) as max_col2,
min(column1) as min_col1,
min(col2) as min_col2
from your_table
答案 2 :(得分:0)
是的,这是可能的
select avg(column1) as avg_resp,
avg(col2) as ncount,
max(column1) as max_col1,
max(col2) as max_col2,
min(column1) as min_col1,
min(col2) as min_col2
from table