Google Data Warehouse Conversion Tool

The Google Data Warehouse Conversion Tool (GDWCT) is an enterprise-grade migration suite designed to automate the transition of legacy on-premise and cloud data warehouses to BigQuery. By 2026, the tool has fully integrated Gemini-based LLMs to handle complex SQL dialect translation with a 95% automated success rate. It operates as part of the Google Cloud Migration Center, providing a unified interface for planning, assessing, and executing migrations from sources like Teradata, Netezza, Oracle, and Spark. The technical architecture focuses on recursive AST (Abstract Syntax Tree) parsing and LLM-driven logic refactoring, ensuring that proprietary stored procedures, macros, and DDL are optimized for BigQuery's serverless execution engine. This eliminates the manual 'lift-and-shift' risks and significantly reduces the total cost of ownership (TCO) for data engineering teams. GDWCT serves as the foundational layer for 2026 data modernization projects, offering a seamless path for enterprises to leverage AI-native analytics and real-time streaming without the technical debt of legacy SQL architectures.