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699e2f4413
Extended SQL engine to handle new Parquet logical types: - Added TimestampValue comparison support (microsecond precision) - Added DateValue comparison support (days since epoch) - Added DecimalValue comparison support with string conversion - Added TimeValue comparison support (microseconds since midnight) - Enhanced valuesEqual(), valueLessThan(), valueGreaterThan() functions - Added decimalToString() helper for precise decimal-to-string conversion - Imported math/big for arbitrary precision decimal handling The SQL engine can now: - ✅ Compare TIMESTAMP values for filtering (e.g., WHERE timestamp > 1672531200000000000) - ✅ Compare DATE values for date-based queries (e.g., WHERE birth_date >= 12345) - ✅ Compare DECIMAL values for precise financial calculations - ✅ Compare TIME values for time-of-day filtering Next: Add YEAR(), MONTH(), DAY() extraction functions for date analytics.