将Ordinal Number格式转换为Number

Question

我需要将FIRST/SECOND/THIRD/FOURTH/FIFITH ....转换为1 2 3 4 5 ....在oracle中是否有一个函数.其他方式可以如下,但我想反过来

SELECT TO_CHAR(to_date(3,'J'), 'fmJSPTH') FROM dual;

Answer 1

好问题!

create table t (w varchar2(30));

insert into t values ('First');
insert into t values ('THIRD');
insert into t values ('eleventh');
insert into t values ('Twenty-eighth');
insert into t values ('two hundred fifty sixth');

select 
  t.w, dict.n
from t
left join (
  select
    level n,
    regexp_replace(to_char(to_date(level,'J'),'fmJSPTH'),'[^A-Z]') w
  FROM dual
  connect by level <= 1000
) dict on regexp_replace(upper(t.w),'[^A-Z]')=dict.w

小提琴