In cases where the data used to populate a target field is dependent on some condition, that condition can be applied to the mapping on that target field.
对于要依赖某种条件来使用数据填充目标字段的情况，可以对该目标字段上的映射应用条件。
Selecting any mapping statement in the Script Pane shows all source and target mappables referenced in the statement, such as mapping source, loop iterator, condition, where clause, and so on.
在Script窗格中选择任何映射语句，这将显示该语句中所引用的所有源和目标可映射对象，如映射源、循环迭代器、条件、where子句，等等。
Meantime, these rational condition are test by sum-weighted preference-deviation mapping.
同时，就群体加权和偏差映射对这些理性条件进行了检验。
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