如何使用 MySQL 正则表达式精确匹配含有日文假名的字段？

<br>create definer=wq19bar@% function jp_char_inside(s text) returns int(11)<br>begin</p>
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                <pre class="brush:php;toolbar:false;">declare h text;
declare p integer;
declare l integer;
declare head text;
declare utf_8 text;
set h = hex(s);
set p = 1;
set l = length(h);
while p <= l do
    set head = substr(h, p, 1);
    if head < '8' then
        set p = p + 2;
    else
        set utf_8 = substr(h, p, 6);
        if (utf_8 >= 'E38181' and utf_8 <= 'E3829E') then
            return 1;
        end if;
        if (utf_8 >= 'E382A1' and utf_8 <= 'E383BE') then
            return 1;
        end if;
        set p = p + 6;
    end if;
end while;