Mysql对比查询同一张表内的某些条件下的数据

直接上代码：

SELECT a.id,a.hospital_code,a.dept_code,a.dept_code,a.doctor_name FROM tb_doctor_info a , tb_doctor_info b   WHERE  a.id<>b.id AND a.doctor_code=b.doctor_code AND a.dept_code=b.dept_code AND a.hospital_code=b.hospital_code ;

效果

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