Spanning Tree-based Query Plan Enumeration

Code on paper: Eraser: Eliminating Performance Regression on Learned Query Optimizer

Tesis de Ingeniería en Computación: Extensión de PostgreSQL con Mecanismos de Optimización de Consultas basadas en Preferencias (Mención Honorífica).

A generic query engine for graph data, based on abstract syntax trees as input.

Query Optimizer

Query rewrite rules for the NebulaStream, an open source stream processing system

Use JSON objects to generate PostgreSQL WHERE clause expressions.

Robust Cardinality Estimator by Non-autoregressive Model

SQL Parser for C++. Building C++ object structure from SQL statements.

Contains implementations of various algorithms for database query optimization. The algorithms cover multiple problem variants (e.g., traditional and multi-objective query optimization) and offer different tradeoffs between optimality guarantees and optimization time (e.g., fast randomized algorithms, approximation schemes, exhaustive algorithms…

Pytorch implementation of LEON: A New Framework for ML-Aided Query Optimization.

CS 562 - DBMS - Extended Multi-Feature Queries Optimizer

build your own query planner

Implementation of a SQL Query Optimizer Application for Oracle Database using indexes and plans.

Run the PostgreSQL Explain Visualizer 2 (pev2) from the command line.

The codebase for DBSim

Laravel package helps you to execute more effective databases queries, delete, update, insert, and optimize your database queries.

Homework for Query Optimization - a TUM Computer Science Course