build your own query planner

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

A high-performance spatial query layer for Polars

Spanning Tree-based Query Plan Enumeration

AI revision platform for university past papers, with PDF ingestion, hierarchical chunking, vector semantic search, query planning, and citation-grounded RAG study guide generation.

Hands-on PostgreSQL guide with Docker labs covering internals, performance, replication, HA, backup/recovery, and advanced SQL

Deterministic planner that picks which MQO pillar tools an NL question needs, in order, with a reason per step

Implementation of the Count-Min-Sketch datastructure for cardinallity estimation on knowelege Graphs. Including experiments on how to reduce noise and make the estimation better.

This module covers techniques to optimize query execution, such as creating indexes, and query planning, that improve performance. It will also introduce tools and techniques for terminating inefficient queries that are consuming our database resources.

Search and retrieval workbench with query planning, multi-source retrieval, citation checking, source-trust tiers, and extractive fallback.

Query planning primitives