数字溢出 - 在限制结果时起作用，不适用于完整查询

Question

我在 TD 中遇到数字溢出问题。

`select 
a1.account_name,
a1.merch_total_units,
sum(a1.merch_total_units) OVER (order by a1.merch_total_units rows 
BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) as running_total,
cast (running_total as decimal (8,4))*100/12767296.0000
from sandbox.merchants_total_units a1
group by 1,2,3
order by 3 desc`

有趣的是，当筛选总计运行时，查询有效。例如：

`select 
a1.account_name,
a1.merch_total_units,
sum(a1.merch_total_units) OVER (order by a1.merch_total_units rows 
BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) as running_total,
cast (running_total as decimal (8,4))*100/12767296.0000
from sandbox.merchants_total_units a1
where a1.merch_total_units > 5000
group by 1,2,3
order by 3 desc`

我尝试通过代码更改每一层的#decimal 点数，没有用

Answer 1

增加小数点长度

cast (running_total as decimal (18,4))*100/12767296.0000

数字溢出 - 在限制结果时起作用，不适用于完整查询

Numeric Overflow - works when limiting results, not for full query

sql

select

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