Useful values when data is missing
A report must distinguish a guest from an identified customer, missing from empty text, and integers from fractions. Build explicit display fields rather than letting missing values or numeric types decide silently.
CASE selects the first matching branch, COALESCE the first non-NULL value, and CAST requests an explicit type conversion.
- Useful values when data is missing
- CASE selects the first matching branch, COALESCE the first non-NULL value, and CAST requests an explicit type conversion.