标签：flow ica rom tool strong gen oracle over number
（1）用作日期转换：
to_char(date,‘格式‘);
select to_date(‘2005-01-01 ‘,‘yyyy-MM-dd‘) from dual;
select to_char(sysdate,‘yyyy-MM-dd HH24:mi:ss‘) from dual;
（2）处理数字：
to_char(number,‘格式‘);
select to_char(88877) from dual;
select to_char(1234567890,‘099999999999999‘) from dual;
select to_char(12345678,‘999,999,999,999‘) from dual;
select to_char(123456,‘99.999‘) from dual;
select to_char(1234567890,‘999,999,999,999.9999‘) from dual;
（3）to_char(salary,‘$99,99‘);
select TO_CHAR(123,‘$99,999.9‘) from dual;
（4）用于进制转换：将10进制转换为16进制；
select to_char(4567,‘xxxx‘) from dual;
select to_char(123,‘xxx‘) from dual;
例子：
标签：flow ica rom tool strong gen oracle over number
原文地址：https://www.cnblogs.com/sjxbg/p/10073409.html
