Debug exists subquery #757
Closed
Conversation
This file contains 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
coorasse
commented
Nov 12, 2021
| @@ -89,7 +89,8 @@ class Editor < ActiveRecord::Base | |||
| if CanCan::ModelAdapters::ActiveRecordAdapter.version_greater_or_equal?('5.0.0') | |||
| describe 'selecting custom columns' do | |||
| it 'extracts custom columns correctly' do | |||
| posts = Post.accessible_by(ability).where(published: true).select('title as mytitle') | |||
| posts = Post.where(title: 'a').accessible_by(ability).where(published: true).select('title as mytitle') | |||
| puts posts.to_sql | |||
There was a problem hiding this comment.
check output to see the issue
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
This PR is a draft to debug the behavior of an exists subquery implemented in #691
Run the relevant test with:
My debugging started because I wanted to understand why we need this JOIN: https://github.com/CanCanCommunity/cancancan/pull/691/files#diff-1ac9b926205ddc47154cac149a2a53d61c308efc15b59bfdea7b13ec6565fff1R63-R64
Apparently is because otherwise it is basically impossible to alias the tables in the inner exists subquery.