[POC] Improving selectivity estimates for system views#4828
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May 19, 2026 06:38
Signed-off-by: Rucha Kulkarni <ruchask@amazon.com>
Signed-off-by: Rucha Kulkarni <ruchask@amazon.com>
…ncies and creates Signed-off-by: Rucha Kulkarni <ruchask@amazon.com>
Signed-off-by: Rucha Kulkarni <ruchask@amazon.com>
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Description
Adding hook implementations and prosupport functions to fix planner row estimate errors that cause bad plan choices for some SSMS Object Explorer operations. Restructure sys.all_objects and sql_modules views to improve join estimates.
Engine PR: babelfish-for-postgresql/postgresql_modified_for_babelfish#761
Issues Resolved
Task: BABEL-6458
Authored-by: Rucha Kulkarni ruchask@amazon.com
Signed-off-by: Rucha Kulkarni ruchask@amazon.com
Test Scenarios Covered
Use case based -
Boundary conditions -
Arbitrary inputs -
Negative test cases -
Minor version upgrade tests -
Major version upgrade tests -
Performance tests -
Tooling impact -
Client tests -
Check List
By submitting this pull request, I confirm that my contribution is under the terms of the Apache 2.0 and PostgreSQL licenses, and grant any person obtaining a copy of the contribution permission to relicense all or a portion of my contribution to the PostgreSQL License solely to contribute all or a portion of my contribution to the PostgreSQL open source project.
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