题解 | 查询培训指定课程的员工信息
select c.staff_id,s.staff_name from cultivate_tb c left join staff_tb s on s.staff_id=c.staff_id where c.course like '%course3%'
select c.staff_id,s.staff_name from cultivate_tb c left join staff_tb s on s.staff_id=c.staff_id where c.course like '%course3%'
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