如何在 AWS Athena 中用 0 填充 null 值

Question

In Athena, what is the most efficient way to fill null values with 0?

I think I can use Case statement, but I am also curious if there are other ways to do it.

Answer 1

We can use coalesce , here is Presto documentation on conditions which is what Athena is built on.

select coalesce(myColumn, 0) from my_table_name