Example: Invoking the SQL UDF - Advanced SQL Engine - Teradata Database

SQL Functions, Expressions, and Predicates

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
17.00
Published
June 2020
Language
English (United States)
Last Update
2021-01-30
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tpt1555966086716.ditamap
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dita:id
B035-1145
lifecycle
previous
Product Category
Teradata Vantageā„¢

In this example, invocations of the SQL UDF named MyUDF2 are passed as arguments to the SQL UDF named MyUDF1.

   CREATE FUNCTION test.MyUDF1 (a INT, b INT, c INT)
   RETURNS INT
   LANGUAGE SQL
   CONTAINS SQL
   DETERMINISTIC
   COLLATION INVOKER
   INLINE TYPE 1
   RETURN a * b * c;
   CREATE FUNCTION test.MyUDF2 (d INT, e INT, f INT)
   RETURNS INT
   LANGUAGE SQL
   CONTAINS SQL
   DETERMINISTIC
   COLLATION INVOKER
   INLINE TYPE 1
   RETURN d + e + f;
   SELECT test.MyUDF1(test.MyUDF2(t1.a1, 1, 2), 
          test.MyUDF2(t1.b1, 2, 3), 5) FROM t1;