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select employee_id,department_name from employees,departments where employees.department_id departm...099 -
desc employees; desc departments; SELECT employee_id,department_id,location_id from employees,depart...0119
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查询表结构 DESC employees; DESC departments; 注意写表别名和连接条件 ‘e’和‘d’,where SELECT e.employee_id,d.departmen...0121
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SELECT employee_id,department_name FROM employees,departments WHERE employees.employee_id departmen...0110
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desc employees; desc departments; select e.employee_id,d.department_name from employees,departments;...0133
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SELECT e.last_name,d.department_id FROM employees e,departments d WHERE d.department_ide.department_...0112
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SELECT employee_id,department_name from employees,departments WHERE employees.employee_id departmen...0142
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SELECT employee_id,department_name from employees,departments where employees.department_id departme...0106
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查询员工id和部门名字 select employee_id,last_name from employees,departments where employees.department_id de...0116
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角度3：内连接vs外连接 SELECT e.employee_id,d.department_name FROM employees e,departments d WHERE e.departmen...0122
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内连接vs外连接 回顾 SELECT employee_id,department_name from employees e,departments d where e.department_i...0115
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select employee_id,department_name from employees e,departments d where e.employee_idd.department_id...0123
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SELECT e.employee_id,d.department_nameFROM employees e,departments dWHERE e.department_id d.departm...0107
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select employee_id,department_name from employees e,departments d where e.employee_idd.department_id...0101
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SELECT employee_id,department_name from employees e,departments d where e.department_idd.department_...0140
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SELECT e.employee_id,d.department_name FROM employees e,departments d WHERE e.department_id d.depar...0110
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SELECT e.employee_id,d.department_namefrom employees e,departments dwhere e.department_idd.departmen...0105
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SELECT e.employee_id,d.department_name FROM employees e,departments d WHERE e.department_id d.depar...0102
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SELECT e.employee_id,d.department_nameFROM employees AS e,departments AS dWHERE e.department_id d.d...0161
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select employee_id,department_name from employees e,departments d where e. department_idd.department...0117
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