Rules for the CASE Expression Result Type - Teradata Vantage

Because the expressions in CASE THEN/ELSE clauses can be different data types, determining the result type is not always straightforward. You can use the TYPE attribute function with the CASE expression as the argument to find out the result data type. See TYPE.

The following rules apply to the data type of the CASE expression result.

• THEN/ELSE Expressions Having the Same Non-Character Data Type
• THEN/ELSE Character Type Expressions
• CASE Expression Examples