hive 运行报错

Error: Error while compiling statement: FAILED: UDFArgumentTypeException Exactly one argument is expected.

近期用spark跑数据出现这个情况,最后查到问题是sum(if(a.id is not null,1,0)) as shouldrepay_count,

一开始写的是sum(a.id is not null,1,0) as shouldrepay_count,然后就报上面的错误

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