对于十进制类型的列 BigQuery 为空

Question

   cast(sum(case
            when x.product = 'APPLE' and x.colour ='RED'then round(x.price1,2)

           when x.product <>  'APPLE' then **'NULL'**
           ELSE 0
         end) as decimal) as price,

price 列的类型为 decimal。但是我只想在这一秒的 when 语句而不是十进制值中给出一个 Null 输出。

我该怎么做？

Answer 1

有简单的 NULL。它应该如下工作。

select cast(sum(case
when x.product = 'Apple' and x.colour ='RED'then round(x.price,2)



when x.product <> 'Apple' then NULL
ELSE 0
end) as decimal) as price

对于十进制类型的列 BigQuery 为空

Null for a decimal type of column BigQuery

null

decimal

google-bigquery