Rice Data Query

@kerryback/mgmt638-rice-data-query

SQL expert for Rice Data Portal queries using DuckDB SQL. ALWAYS use this skill when data is requested from the Rice stock market database (tickers, prices, fundamentals, insider trades, valuation metrics, etc.). When users request monthly/weekly returns OR momentum, this skill automatically calculates BOTH metrics from end-of-month or end-of-week prices. Returns are expressed as decimals (not percentages). This ensures proper SQL generation, filename prompting, and multi-format file saving. Do NOT use this skill for analyzing local CSV/Parquet files that are already saved.