Bump.. On Tue, Jun 8, 2021, 11:16 PM Harshit Pandey <harshitpandey...@gmail.com> wrote:
> > <https://stackoverflow.com/posts/64661000/timeline> > > Hi Solr users > > While reading through the solr docs > <https://lucene.apache.org/solr/guide/6_6/transforming-result-documents.html#TransformingResultDocuments-_subquery_>, > it states '*[subquery] is an improvement over [child]'*. > > On deep diving through the docs 1,* [subquery] definitely *seems better > wrt. the capabilities/offerings (sorting of nested documents, etc). It > gives much more control as compared to the *[child]* transformer > > *But is it better (or equivalent) in terms of performance as well ?* > > 1 of the requirements of my current project is to sort the child documents > for every parent. *[child]* doesn't seem to have that support. > *[subquery]* has it, but I am hesitant to migrate to it as it seems to be > more expensive. > > As per my understanding, *[child]* only gets executed within the > boundaries of the child docs for a given parent. Whereas *[subquery]* gets > executed across the index. Hence the [*Subquery]* transformer seems to be > more expensive than [*Child].* Please help in validating this hypothesis. > > > "*Can I use the [subquery] transformer as efficiently as > the [child] transformer itself ???*" > > > Any details/insights wrt the performance comparisons will be appreciated. > > > Thanks, > > Harshit > > > >
