1. 程式人生 > >Oracle常用取整方法

Oracle常用取整方法

S:select abs(-1) value
  select abs(-1) value from dual

  2.取整(大)
  S:select ceiling(-1.001) value
  select ceil(-1.001) value from dual

  3.取整(小)
  S:select floor(-1.001) value
  select floor(-1.001) value from dual

  4.取整(擷取)
  S:select cast(-1.002 as int) value
  select trunc(-1.002) value from dual

  5.四捨五入
  S:select round(1.23456,4) value 1.23460
  select round(1.23456,4) value from dual 1.2346