Example: Invoking an SQL UDF in a Recursive Query - Analytics Database - Teradata Vantage

SQL Data Manipulation Language

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
2024-04-05
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lifecycle
latest
Product Category
Teradata Vantage™

This example invokes the SQL UDF value_expression in the WHERE clause of the recursive query.

     WITH RECURSIVE temp_table (employee_number) AS (
       SELECT root.employee_number
       FROM employee AS root
       WHERE root.manager_employee_number = 801
       AND   test.value_expression(dept_no, 0) = 25;
     UNION ALL
       SELECT indirect.employee_number
       FROM temp_table AS direct, employee AS indirect
       WHERE direct.employee_number = indirect.manager_employee_number
       AND   test.value_expression(2,3) = 5
       )
     SELECT *
     FROM temp_table
     ORDER BY employee_number;