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58问答库 > sql 除法中如何防止被除数为0?（急）

sql 除法中如何防止被除数为0?（急）

2025-04-07 11:27:42

推荐回答（2个）

回答（1）：

我一般在项目中都是用case when 方式,不仅仅判断被除数，还需要判断除数；
这样写可能会好点：
SUM(ROUND(case when S1.SAL_NOS_PRM_AMT<=0 then S1.SAL_AMT
when S1.SAL_AMT<=0 then 0
else S1.SAL_AMT / S1.SAL_NOS_PRM_AMT
end)
) ADD_COUNT,

回答（2）：

用decode函数。
如：decode(S1.SAL_NOS_PRM_AMT,0,1,S1.SAL_NOS_PRM_AMT)
decode(S1.RECV_PRM_AMT,0,1,S1.RECV_PRM_AMT)

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