oracle-merge用法详解

create table PRODUCTS
    (
    PRODUCT_ID INTEGER,
    PRODUCT_NAME VARCHAR2(60),
    CATEGORY VARCHAR2(60)
    );

    insert into PRODUCTS values (1501, 'VIVITAR 35MM', 'ELECTRNCS');
    insert into PRODUCTS values (1502, 'OLYMPUS IS50', 'ELECTRNCS');
    insert into PRODUCTS values (1600, 'PLAY GYM', 'TOYS');
    insert into PRODUCTS values (1601, 'LAMAZE', 'TOYS');
    insert into PRODUCTS values (1666, 'HARRY POTTER', 'DVD');
    commit;

    create table NEWPRODUCTS
    (
    PRODUCT_ID INTEGER,
    PRODUCT_NAME VARCHAR2(60),
    CATEGORY VARCHAR2(60)
    );

    insert into NEWPRODUCTS values (1502, 'OLYMPUS CAMERA', 'ELECTRNCS');
    insert into NEWPRODUCTS values (1601, 'LAMAZE', 'TOYS');
    insert into NEWPRODUCTS values (1666, 'HARRY POTTER', 'TOYS');
    insert into NEWPRODUCTS values (1700, 'WAIT INTERFACE', 'BOOKS');
    commit;