Example: Using the DEFAULT Function With MERGE - 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™

The following examples show the correct use of the DEFAULT function within the MERGE statement.

     MERGE INTO emp
     USING VALUES (100, 'cc', 200, 3333) AS emp1 (empnum, name,
                                                  deptno, sal)
       ON emp1.empnum=emp.s_no
     WHEN MATCHED THEN
       UPDATE SET sal=DEFAULT
     WHEN NOT MATCHED THEN
       INSERT VALUES (emp1.empnum, emp1.name, emp1.deptno, emp1.sal);
     MERGE INTO emp
     USING VALUES (100, 'cc', 200, 3333) AS emp1 (empnum, name,
                                                  deptno, sal)
       ON emp1.empnum=emp.s_no
     WHEN MATCHED THEN
       UPDATE SET sal=DEFAULT(emp.sal)
     WHEN NOT MATCHED THEN
       INSERT VALUES (emp1.empnum, emp1.name, emp1.deptno, emp1.sal);     
       USING (empno INTEGER,
             name   VARCHAR(50),
             salary INTEGER)
     MERGE INTO employee AS t
     USING VALUES (:empno, :name, :salary) AS s(empno, name, salary)
       ON t.empno=s.empno
     WHEN MATCHED THEN UPDATE
       SET salary=s.salary
     WHEN NOT MATCHED THEN INSERT (empno, name, salary)
       VALUES (s.empno, s.name, s.salary);