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使用正则表达式怎么样?这可以通过将 char 160 或 243 替换为空字符来消除您的麻烦字符:
SQL> select regexp_replace('abc' || chr(160) || chr(243) || 'def', '(' || chr(160) || '|' || chr(243) || ')', '') from dual; REGEXP ------ abcdef SQL>