需要正则表达式来匹配Oracle 12cR1源代码中的精确表名

我正在使用 甲骨文12cR1 . 我需要一个REGEX模式来精确匹配Oracle源代码中给定的表名(即,匹配的前面或后面不能有数字、字母或下划线符号)。

测试代码:

with names as (
select 'mytabname' tabname from dual union all
select 'mytabname1' from dual union all
select 'mytabname_' from dual union all
select 'mytabnameX' from dual union all
select '1mytabname' from dual union all
select '_mytabname' from dual union all
select 'Xmytabname' from dual union all
select '1mytabname_' from dual union all
select '1mytabnameX' from dual union all
select '_mytabname1' from dual union all
select 'Xmytabname1' from dual union all
select '_mytabnameX' from dual union all
select 'Xmytabname_' from dual union all
select '_mytabname_' from dual union all
select 'XmytabnameX' from dual union all
select '1mytabname1' from dual union all
select ' mytabname_' from dual union all
select '_mytabname ' from dual union all
select ' mytabname ' from dual union all
select ' mytabnameX' from dual union all
select 'Xmytabname ' from dual union all
select ' mytabname1' from dual union all
select '1mytabname ' from dual union all
select '.mytabname ' from dual union all
select ' mytabname.' from dual union all
select '.mytabname.' from dual union all
select '*mytabname' from dual union all
select ' mytabname*' from dual union all
select '*mytabname*' from dual union all
select 'defmytabnameabc' from dual)
select 'start'||tabname||'end' from names
where regexp_like(tabname, '[^a-zA-Z0-9_](mytabname)[^a-zA-Z0-9_]');

start mytabname end
start.mytabname end
start mytabname.end
start.mytabname.end
start mytabname*end
start*mytabname*end

输出缺少以下记录

startmytabnameend
start*mytabnameend