db2 查看当前模式

   select current schema from sysibm.sysdummy1    
   select current schema from sysibm.dual    

   select current sqlid from sysibm.sysdummy1    
   select current sqlid from sysibm.dual    

   values current schema    

   values current sqlid　    

   注:dual是一个从sysdummy1中创建而来的view