摘要：
ORACLE：select round(1.23456,4) value from dual MYSQL：select round(1.23456,4) value 2 abs(-1) abs(-1) 功能: 将当前数据取绝对值 用法: oracle和mysql用法一样 mysql: select 阅读全文
摘要：
1、mysqlbinlog之base64-output参数 --base64-output=value This option determines when events should be displayed encoded as base-64 strings using BINLOG sta 阅读全文