Default N/A是没有默认值的意思吗? #6606
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Default N/A 和Null有什么区别,java在读取该列数据的时候遇到Double类型字段,但是有nan值,怎么才能正确读取? |
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Answered by
EmmyMiao87
Sep 14, 2021
Replies: 1 comment
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Null 和 N/A 不是一个值。 |
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Answer selected by
EmmyMiao87
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Null 和 N/A 不是一个值。
Null 就是 Null,代表这列的值是 Null。
N/A 一般出现在,比如 除0 这种运算的结果就是 N/A