1.取整(大) select ceil(1.5) from dual
2.取整(小) select floor(1.5) from dual
3.取整(截取) select trunc(1.5) from dual
4.取整(舍入) select round(1.5) from dual
1.取整(大) select ceil(1.5) from dual
2.取整(小) select floor(1.5) from dual
3.取整(截取) select trunc(1.5) from dual
4.取整(舍入) select round(1.5) from dual