Fix Last() on primitive collections returning the first array element - #3925
Open
sanjaysingh wants to merge 1 commit into
Open
sanjaysingh wants to merge 1 commit into
sanjaysingh wants to merge 1 commit into
Conversation
…s the last element. The unnest cleanup treated that sort as redundant and collapsed Last() to LIMIT 1. Co-authored-by: Cursor <cursoragent@cursor.com>
This branch has not been deployed
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
Last()andLastOrDefault()on a PostgreSQL array were translated likeFirst(). The unnest cleanup dropped a leading ordinality ordering becauseunnestalready returns rows in ascending order, and that also removed the descending sortLast()needs.WITH ORDINALITYandORDER BY ordinality DESCwhen that ordering is descending. Ascending ordinality is still removed, soFirst()SQL is unchanged.Test plan
dotnet buildforEFCore.PGandEFCore.PG.FunctionalTests