16.20 - Rules for the CASE Expression Result Type - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Functions, Expressions, and Predicates

Product
Advanced SQL Engine
Teradata Database
Release Number
16.20
Published
March 2019
Language
English (United States)
Last Update
2020-03-25
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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.