Awesome GitHub RepositoriesQuery Rewriting

Pinot is a distributed, columnar analytical database designed for high-concurrency, low-latency query processing. It functions as a real-time OLAP datastore, enabling interactive, user-facing analytics by ingesting and querying massive datasets from both streaming and batch sources. The system architecture relies on a centralized controller for cluster coordination and a distributed segment-based storage model to ensure horizontal scalability. The platform distinguishes itself through a hybrid ingestion pipeline that unifies real-time event streams and historical batch data into a single quer

JSqlParser is a Java library for SQL query parsing, converting raw SQL strings into a structured hierarchy of strongly typed Java objects. It provides the means to programmatically analyze and manipulate database queries by representing them as a tree of objects. The library supports both the parsing of existing SQL text and the programmatic generation of new statements through a fluent API. It includes mechanisms for transforming query trees and serializing structured object models back into formatted SQL text. Additional capabilities include database schema analysis, such as the extraction

pgdog is a PostgreSQL sharding proxy, distributed SQL router, and connection pooler. It is designed to enable horizontal data distribution by splitting tables and indices across multiple independent servers to scale storage and processing capacity. The project distinguishes itself through online resharding capabilities, using logical replication to move data between shards without application downtime. It supports multiple routing strategies, including hash, list, and range-based query routing, and manages distributed atomic transactions using a two-phase commit process to ensure consistency

Fast-paginate is a database utility designed to optimize pagination performance in PHP and Laravel applications. It functions as a transparent layer that intercepts standard query builders to replace default pagination logic with more efficient retrieval strategies, specifically targeting large-scale datasets where traditional offset and limit operations can become resource-intensive. The library distinguishes itself by implementing deferred join techniques, which retrieve only primary keys in an initial subquery before fetching full records to minimize data scanning. It further improves resp