技术教程 mysql查询null异常:attempted to return null from a method with a primitive return type 正文

mysql查询null异常:attempted to return null from a method with a primitive return type

2022-10-25,,,,

select sum(deposit_amount)
from tb_commission_ib_day

mysql查询时报异常:

attempted to return null from a method with a primitive return type

是因为查询时结果是 null, 需要给默认值

select IFNULL(sum(deposit_amount),0)
from tb_commission_ib_day

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