仅从列中获取字符记录

Get only character records from column

Table:

create table tbl_prefix
(
    col_pre varchar
);

记录:

insert into tbl_prefix values
('Mr.'),('Mrs.'),('Ms.'),('Dr.'),
('Jr.'),('Sr.'),('II'),('III'),
('IV'),('V'),('VI'),('VII'),
('VIII'),('I'),('IX'),('X'),
('Officer'),('Judge'),('Master');

预期输出:

col_pre
----------
Mr.
Mrs.
Ms.
Dr.
Jr.
Sr.
Officer
Judge
Master

尝试:

select *
from tbl_prefix
where col_pre ~ '[^a-zA-Z]'

获得:

col_pre
----------
Mr.
Mrs.
Ms.
Dr.
Jr.
Sr.

这里的一种方法可能是匹配任何不是罗马数字的前缀:

SELECT *
FROM tbl_prefix
WHERE col_pre !~ '^M{0,4}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})$';

Demo

这里用于罗马数字的正则表达式模式来自这个 SO 问题:

How do you match only valid roman numerals with a regular expression?