1.创建MQT
  create table fif07c_mqt as
(SELECT d1.VAE527,d1.AAE043,
       SUM(f0.VIF013) as VIF013,
       SUM(f0.VIF014) as VIF014,
       SUM(f0.VIF015) as VIF015,
       SUM(f0.VIF033) as VIF033,
       SUM(f0.VIF034) as VIF034,
       SUM(f0.VIF035) as VIF035,
       SUM(f0.VIF013 + f0.VIF014 + f0.VIF015) as vif036,
       SUM(f0.VIF033 + f0.VIF034 + f0.VIF035) as vif037
  FROM JHK.FIF07C f0,
       JHK.DAAE043 d1,
       JHK.DAAB301 d2,
       JHK.DAAC004 d3,
       JHK.DAAC012 d4,
       JHK.DAIC161 d5,
       JHK.DAAB020 d6,
       JHK.DAAB022 d7,
       JHK.DAAE043 d8,
       JHK.DVAC564_2 d9,
       JHK.DVAE561_4 d10,
       JHK.DVAE571_1 d11
 WHERE f0.AAE043 = d1.AAE043
   AND f0.AAB301 = d2.AAB301
   AND f0.AAC004 = d3.AAC004
   AND f0.AAC012 = d4.AAC012
   AND f0.AIC161 = d5.AIC161
   AND f0.AAB020 = d6.AAB020
   AND f0.AAB022 = d7.AAB022
   AND f0.AAE043 = d8.AAE043
   AND f0.VAC564 = d9.VAC564
   AND f0.AIC048 = d10.VAE567
   AND f0.VIF025 = d11.VAE575
   AND (d1.VAE527=20074)
 GROUP BY d1.VAE527,d1.AAE043
)
 data initially deferred refresh DEFERRED;----（延迟刷新，此时表是暂挂的，刷新数据后即可用）
 2.刷新数据
 refresh table fif07c_mqt;----刷新数据
 3.更新统计信息
runstats on table fif07c_mqt;
 4.设置寄存器
设置db cfg  dft_refresh_age to ANY-----只有当是refresh DEFERRED模式的时候才用设置，immediate的时候不用次设置，设置的目的是启用MQT
SET CURRENT REFRESH AGE ANY 仅对每次的连接会话起作用
 5.查看是否使用MQT
   运用工具db2exfmt
6.只有 REFRESH DEFERRED 物化查询表可以定义为 MAINTAINED BY USER。不能对用户维护的 MQT 发出 REFRESH TABLE 语句（用于系统维护的 MQT）。但是，用户维护的 MQT 却允许对它们执行 insert、update 或 delete 操作。
7.EXP0054W  The following REFRESH DEFERRED MQT was not considered for rewrite matching because the CURRENT REFRESH AGE          register was not set to ANY: "JHK     "."FIF07C_MQT".  和设置不是一个连接会话
 8.对于immediate的刷新方式
   只要SQL里面包含了sum，那么就一定要加count(sum里面的字段，几个sum这里就要有几个count)，另外还要加一个count(1)
9. 在用get snapshot for dynamaic sql for dbname时，相同的SQL执行的时候，会增加执行的次数，时间也是根据次数累加的！！
10.MQT表的数据并不是一部分数据，而是SQL查出来的全部数据
11.MQT对前台的钻取是不支持的，仅仅支持一个层次而已