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- case class OrderedSelect(order: List[Int], selectValue: SelectValue) extends PseudoAst with Product with Serializable
In order to be able to reconstruct the original ordering of elements inside of a select clause, we need to keep track of their order, not only within the top-level select but also it's order within any possible tuples/case-classes that in which it is embedded.
In order to be able to reconstruct the original ordering of elements inside of a select clause, we need to keep track of their order, not only within the top-level select but also it's order within any possible tuples/case-classes that in which it is embedded. For example, in the query:
Since thequery[Person].map(p => (p.id, (p.name, p.age))).nested // SELECT p.id, p.name, p.age FROM (SELECT x.id, x.name, x.age FROM person x) AS pp.nameandp.ageelements are selected inside of a sub-tuple, their "order" isList(2,1)andList(2,2)respectively as opposed top.idwhose "order" is justList(1).This class keeps track of the values needed in order to perform do this.
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- object OrderedSelect extends Serializable