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2 SELECT MAX(salary),MIN(salary),AVG(salary),SUM(salary) FROM employees; 3 SELECT job_id,MAX(salary)...0296 -
第八章 子查询 需求：谁的工资比Abel高？ SELECT salary FROM employees WHERE last_nameAbel; SELECT last_name,salary F...0258
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第8章 子查询 需求：谁的工资比Abel高？ 方式1： SELECT salary FROM employees WHERE last_nameAbel; SELECT last_name,sa...0296
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GROUP BY having 的使用（作用：用来过滤数据） WHERE ，过滤数据 GROUP BY 分组之后，提到HAVING 从需求出发 练习：查询各个部门中最高工资比10000高的部门信息 错...0327
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谁的工资比Abel高 方式一 SELECT salary FROM employees WHERE last_nameAbel; SELECT last_name,salary FROM empl...0362
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第八章 子查询 需求：谁的工资比Abel高？ 方式一： SELECT salary from employees where last_nameAble; SELECT last_name,salar...0341 -
SELECT max(salary),min(salary),avg(salary),sum(salary) from employees; SELECT job_id,max(salary),min...0373
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随堂练习 SELECT max(salary),MIN(salary),AVG(salary),SUM(salary) FROM employees SELECT job_id,MAX(salary)...0258
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子查询 需求：谁的工资比Abel的高！ 方法1： SELECT salary from employees WHERE last_nameAbel; SELECT last_name, salary ...0280
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子查询 需求：谁的工资比Abel高 方式1： SELECT salary from employees where last_nameAbel; SELECT last_name,salary ...0304
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SELECT MAX(salary),MIN(salary),AVG(salary),SUM(salary) from employees; SELECT job_id,MAX(salary),MIN...0261
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2.查询公司员工工资的最大值，最小值，平均值，总和 SELECT MAX(salary),MIN(salary),AVG(salary),SUM(salary) from employees; 3.查...0345
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