The value of the field in the table is likely to contain Chinese also may contain English parentheses, brackets may contain
Query may use Chinese parentheses, it is also possible in English parentheses check
This kind of situation is there any way for oracle to limit, in both English and Chinese can query each other,

CodePudding user response:

The select to_multi_byte (' A '), to_single_byte (' A ') from dual