操作数数据类型varchar(max)对于除法运算符无效

liwlm1x9 于 2021-08-09 发布在 Java

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下面是我尝试使用microsoft sql server management studio运行的查询：

update [SG report] 
set [percentage_paid] = ([Savings This Season (All)] / [Savings Goal Amount]) * 100

sql sql-server ssms

来源：https://stackoverflow.com/questions/61857473/operand-data-type-varcharmax-is-invalid-for-divide-operator

2条答案

按热度按时间

7ivaypg91#

一个或两个值都是字符串。使用 try_convert() 将它们转换为适当的类型。具体的类型不清楚，但类似于：

update [SG report] 
    set [percentage_paid] =  (try_convert(float, [Savings This Season (All)])  * 100 /
                              try_convert(float, [Savings Goal Amount])
                             );

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mpbci0fu2#

update [SG report] 
set [percentage_paid] =  ([Savings This Season (All)] / [Savings Goal Amount]) * 100
where isnumeric([Savings This Season (All)])=1 and isnumeric([Savings Goal Amount])=1

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操作数数据类型varchar(max)对于除法运算符无效

2条答案

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