Example: Incorrect Examples Because of ON Clause Errors or Mismatches Between the ON Clause and the INSERT Specification - Analytics Database - Teradata Vantage

The following MERGE request fails because its ON clause specifies a condition of x1=z2, but its INSERT clause substitutes y2 for x1:

     MERGE INTO t1
     USING t2
       ON x1=z2 AND y1=y2
     WHEN MATCHED THEN
       UPDATE SET z1=10
     WHEN NOT MATCHED THEN
       INSERT (x1, y1, z1) VALUES (y2, z2, x2);

The following MERGE request fails because its ON clause specifies a condition of x1=z2+10, but its INSERT clause inserts y2+20 for x1:

     MERGE INTO t1
     USING t2
       ON x1=z2+10 AND y1=y2+20
     WHEN MATCHED THEN
       UPDATE SET z1=10
     WHEN NOT MATCHED THEN
       INSERT (y2+20, z2+10, x2);