Example: Invoking Compatible Argument Data Types - Analytics Database - Teradata Vantage

SQL Functions, Expressions, and Predicates

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-01-12
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lifecycle
latest
Product Category
Teradata Vantageā„¢

In this example, the UDF invocation argument data type (BYTEINT) is not the same as that of the corresponding UDF parameter data type (INTEGER) since the size of the argument data type is less than the UDF parameter data type. However, because the two data types are compatible and a BYTEINT argument can fit inside an INTEGER parameter, this is allowed.

   CREATE FUNCTION test.MyUDF (a INT, b INT, c INT)
   RETURNS INT
   LANGUAGE SQL
   CONTAINS SQL
   DETERMINISTIC
   COLLATION INVOKER
   INLINE TYPE 1
   RETURN a * b * c;
   CREATE TABLE t1 (a1 BYTEINT, b1 INT);
   SELECT test.MyUDF(t1.a1, t1.b1, 2) FROM t1;