On duplicate key update feature in H2
You need to use the MySQL mode. To do that, append ;mode=MySQL to the database URL. (This feature is not properly documented yet).
The table needs to have a primary key or at least a unique index. Complete example:
drop table MREPORT;set mode MySQL;create table MREPORT(PRODUCTID int primary key, DESCRIPTION varchar, QUANTITY int, SUBTOTAL int, PROFIT int);INSERT INTO MREPORT (PRODUCTID ,DESCRIPTION ,QUANTITY ,SUBTOTAL ,PROFIT ) VALUES (22,'olper',5,100,260) ON DUPLICATE KEY UPDATE QUANTITY = QUANTITY+5;