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mysql数据库 时间：2024-12-03 10:29:40
作者：文/会员上传
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#案例：查询员工的工资和工资级别SELECTsalary,grade_levelFROMemployees AS e,job_grades AS jWHEREsalary BETWEEN j.`lowest_sal` AND j.`highest_sal` #e表的salary字段会
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#案例：查询员工的工资和工资级别
SELECTsalary,grade_levelFROMemployees AS e,job_grades AS jWHEREsalary BETWEEN j.`lowest_sal` AND j.`highest_sal` #e表的salary字段会和j表的每行字段挨个比较11-20
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