dql7588 2015-01-08 09:38
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如何为数据库中的空字段存储空值（NA）？

I have a website which has a lot of different fields. Some of the fields are optional while some are mandatory. i want to store (NA) in DB for empty values. is this possible?

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  • dongmian5325 2015-01-08 09:42
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    You can set default value as NA for the respected columns. So when the value not comes then default will be used.

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