数据检索速度

1、检索原表比视图快。
程序中调sql语句时，能用原表的尽量用原表，因为用原表查询的时候速度远快于查询视图。
  比如：原表检索
  select t.kcbj,min(t.xn) as xn,min(t.xq) as xq,min(t.jszgh) as jszgh,min(t.kcmc) as   kcmc,min(t.skzhou) as skzhou,min(t.skxingqi) as skxingqi,wm_concat(distinct t.bjmc) as bjmc,min(t.jxrwid) as jxrwid,min(t.skdd) as skdd,min(t.jsxm) as jsxm,min(t.xkkh) as xkkh,min(t.num_xingqi) as num_xingqi,min(t.zhoutype) as zhoutype,min(t.id)as id,min(t.hbbj)as hbbj,wm_concat(distinct t.skjie) as skjie
  from kebiao t
  where t.jszgh = 'J00432'
  group by t.kcbj
  order by t.kcbj;
   视图：
   select * from v_kebiao_hb_hj where jszgh = 'J00432';