yydcdut@Android笔记

摘要： 求绝对值函数select abs(-5) from dual;求平方根函数select sqrt(2) from dual;求幂函数select power(2,3) from dual;求余弦三角函数select cos(3.14159) from dual;求除法余数select mod(1600, 300) from dual;求大于等于某数的最小整数select ceil(2.35) from dual;求小于等于某数的最大整数select floor(2.35) from dual;按指定精度对十进制数四舍五入select round(45.923, 1) from dual;sel 阅读全文