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create uique index stu_cou_index on student_info.results (student_id, course_id);
show index from student_info.results;
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show warnings disabled.
error:
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create unique index stu_cou_index on student_info.results (student_id, course_id);
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show warnings disabled.
show warnings disabled.
error:
unknown command '\i'
->
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java.sql.SQLException: Illegal mix of collations (gb2312_chinese_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation 'like'
at com.mys ......