避免浮点型造成的数据误差
- https://www.sqlbi.com/blog/marco/2022/04/23/side-effects-of-rounding-differences-in-power-bi
- https://www.sqlbi.com/articles/differences-between-int-and-convert-in-dax
数据精度很多时候对值的影响是很大的，且表达式中不同的顺序，结果也是不一样的
数据类型对DAX算术计算的影响- SQLBI --- Impact of data types in DAX arithmetical calculations - SQLBI
Power BI 中舍入差异的副作用 - SQLBI --- Side effects of rounding differences in Power BI - SQLBI