When generating SQL expressions for measures that reference other measures, the aggregation function might not be used to form the SQL expression for the nested measures.

如果一个度量引用其他度量，那么在为它产生SQL表达式时，不能使用聚合函数来为嵌套的度量产生SQL表达式。

youdao

Columns and attributes markers are substituted the same way as they are for attributes, so the SQL expression resulting from the SQL expression template will be.

按照与属性相同的方式，对列和属性标志进行替换，所以从SQL表达式模板产生的SQL表达式是。

youdao

Then apply the aggregation function to the SQL expression resulting from the SQL expression template to form the SQL expression for the measure.

然后，对从SQL表达式模板产生的SQL表达式应用聚合，形成度量的SQL表达式。

youdao

Then apply the aggregation function to the SQL expression resulting from the SQL expression template to form the SQL expression for the measure.

然后，对从SQL表达式模板产生的SQL表达式应用聚合，形成度量的SQL表达式。

youdao