Use float or double type to store data, the loss of precision is a little heavy
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@yu285 is already working on this.
Since Jan 8, 2024.
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Description
tdengine版本:3.2.2.0
将数据类型设置为float或者double类型的时候，存储电表相关数据存在精度损失，并且对电表电量进行sum时候，结果也有精度损失。
只有将数据类型换成nchar的时候可以解决这个问题，但是会无法sum做计算操作。有没有什么好的方案可以解决这个问题，类似于decimal数据类型或者其他方案进行解决。
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