Large language models (LLMs) have recently demonstrated strong capabilities in code migration across languages, making them promising for SQL schema migration. However, achieving reliable and accurate SQL migration with LLMs remains a challenge. This paper presents the first comprehensive approach for practical and effective SQL schema migration using LLMs. We highlight the necessity of robust evaluation and iterative query refinement to achieve highly accurate migrations. Building on traditional database tools along with LLMs, we introduce novel checks to guide LLMs towards syntactically complete and functionally equivalent translations. Our approach supports all schema object types, including complex procedural constructs. Our demonstrations offer audience opportunities to explore our system using a variety of configurations, datasets and custom inputs, providing useful insights into the underlying techniques, their strengths, and limitations.

Conversational question answering aims to provide natural-language answers to users in information-seeking conversations. Existing conversational QA benchmarks compare models with pre-collected human-human conversations, using ground-truth answers provided in conversational history. It remains unclear whether we can rely on this static evaluation for model development and whether current systems can well generalize to real-world human-machine conversations. In this work, we conduct the first large-scale human evaluation of state-of-the-art conversational QA systems, where human evaluators converse with models and judge the correctness of their answers. We find that the distribution of human machine conversations differs drastically from that of human-human conversations, and there is a disagreement between human and gold-history evaluation in terms of model ranking. We further investigate how to improve automatic evaluations, and propose a question rewriting mechanism based on predicted history, which better correlates with human judgments. Finally, we analyze the impact of various modeling strategies and discuss future directions towards building better conversational question answering systems.