摘要: 1 select abs (-100) from dual;--绝对值 2 3 select mod (8,5) from dual;--取模,取余数 4 5 select ceil (12.1) from dual;--去上限值 6 7 select floor (12.1)... 阅读全文
posted @ 2015-10-29 21:38 雨鹭 阅读(156) 评论(0) 推荐(0)