java实现对两张表进行数据同步

MERGE A表 AS a 
USING ( SELECT x.id, x.field_2, x.field_3,x.field_4 FROM B表 x )//查询有用的字段
AS b
 ON a.id= b.id  //匹配条件
WHEN MATCHED THEN //当匹配时执行update
UPDATE 
	SET a.field_2 = b.field_2
WHEN NOT MATCHED  THEN  //当不匹配时执行insert
	INSERT (id,field_2,field_3,field_4) VALUES (b.id,b.field_2,b.field_3,b.field_4);

@Aspect
@Component
public class LogAspect {

    private static final Logger logger = LoggerFactory.getLogger(LogAspect.class);


    @Pointcut("@annotation(com.xxx.annotation.MyAction)")//注解路径
    public void annotationPointCat() {
    }


    @Resource
    JdbcTemplate jdbcTemplate;


    @AfterReturning(pointcut = "annotationPointCat()")
    public void afterRunning() {
        System.out.println("方法执行完执行...afterRunning");
        logger.info("Buffer更新成功");
        logger.info("准备同步至Detail表");
        logger.info("开始");
        String sql = "MERGE A表 AS a 
USING ( SELECT x.id, x.field_2, x.field_3,x.field_4 FROM B表 x )//查询有用的字段
AS b
 ON a.id= b.id  //匹配条件
WHEN MATCHED THEN //当匹配时执行update
UPDATE 
	SET a.field_2 = b.field_2
WHEN NOT MATCHED  THEN  //当不匹配时执行insert
	INSERT (id,field_2,field_3,field_4) VALUES (b.id,b.field_2,b.field_3,b.field_4);";
        jdbcTemplate.execute(sql);
        logger.info("同步完成");
        System.out.println("finish");

    }

}

SET NOCOUNT ON