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Jiajun Xie commented on CALCITE-3952: ------------------------------------- I think that we solved it in 1.36 and I add two links. If there is no objection, I will close the issue at the next week. > Improve SortRemoveRule to remove Sort based on rowcount > ------------------------------------------------------- > > Key: CALCITE-3952 > URL: https://issues.apache.org/jira/browse/CALCITE-3952 > Project: Calcite > Issue Type: Improvement > Components: core > Reporter: Vineet Garg > Assignee: Vineet Garg > Priority: Major > Time Spent: 1.5h > Remaining Estimate: 0h > > If a query is guaranteed to produce maximum one row it is safe to remove Sort > (along with limit). > Example: > {code:sql} > select count(*) cs from store_sales where ss_ext_sales_price > 100.00 order > by cs limit 100 > {code} > Although logically equivalent this can greatly benefit physical plans by > removing extra operator and avoiding unnecessary data transfer. -- This message was sent by Atlassian Jira (v8.20.10#820010)