我跟着this教程和杠杆this github项目,并写了一个简单的'mysum'UDF函数。 @ScalarFunction("mysum")
@Description("Returns summation of two numbers")
@SqlType(StandardTypes.BIGINT)
public static long sum(@SqlType(StandardType
通常在普雷斯托创建一个表(从现有的数据库表),我做的: create table abc as (
select...
)
,而是为了让我的代码简单,我已经打破了子查询这样的: with sub1 as (
select...
),
sub2 as (
select...
),
sub3 as (
select...
)
select
from sub1 join sub