Example: Using the Target Table as the Source Table - Advanced SQL Engine - Teradata Database

The following example uses target table t1 as its source table:

     MERGE INTO t1
       USING t1 AS s
       ON t1.a1 = s.a1
     WHEN MATCHED THEN
       UPDATE SET b1 = 10
     WHEN NOT MATCHED THEN
       INSERT VALUES (s.a1, s.b1, s.c1);