select sum(deposit_amount)
from tb_commission_ib_day
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
2022-10-25技术教程下载本文attempted,mysql,null,异常,查询
select sum(deposit_amount)
from tb_commission_ib_day
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
《mysql查询null异常:attempted to return null from a method with a primitive return type.doc》
下载本文的Word格式文档,以方便收藏与打印。