apache-flink - ArithmeticException when divide const integer in Flink SQL

Question

Flink throwed ArithmeticException(on-terminating decimal expansion no exact representable decimal result) when I executed below query:

SELECT productId, COUNT(order), COUNT(order)/100.0
From product
GROUP BY productId

I can't find a way from the document or google to get rid of this issue. Thanks.

Answer 1

该异常将在即将发布的 Flink 1.5 版本中修复。本期对此进行了说明。作为一种解决方法，您可以简单地转换为 double precision CAST(x AS DOUBLE)。BigDecimal只有 Java类型 (SQL )的算术DECIMAL会受到影响。