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

Teradata Vantage™ - SQL関数、式、および述部

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Published
2021年7月
Language
日本語
Last Update
2021-09-23
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ja-JP/djk1612415574830.ditamap
dita:ditavalPath
ja-JP/wrg1590696035526.ditaval
dita:id
B035-1145
Product Category
Software
Teradata Vantage

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;