oracle 小数格式化为百分数

Select CONCAT(TO_CHAR('0.001'*100,'990.99'),'%') FROM DUAL; 优化查询速度 select /*+ FIRST_ROWS */ a.subrequire_no,t.。。。。。 from table --to_char() select to_char(1234567.89,'9,999,999.99') id from dual; select to_char(1234567.89,'999,999,999.99') id from dual; select to_char(1234567.89,'009,999,999.9900') id from dual; select to_char(1234567.89,'9.99EEEE') id from dual; select to_char(1234567.89,'999999.99EEEE') id from dual; select to_char(-1234567.89,'999,999,999.99PR') id from dual;