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select employee_id,department_name from employees e right join departments d on e.department_id d.d...0346 -
SELECT employee_id,department_name from employees e left join departments d on e.department_id d.de...0316
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中图：内连接 SELECT employee_id,department_name FROM employees e JOIN departments d ON e.department_id d....0312
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满外连接 mysql不支持 FULL OUTER JOIN做满外查询 SELECT employee_id,department_name FROM employees e FULL OUTER J...0325
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SELECT employee_id,department_name FROM employees e LEFT JOIN departments d ON e.department_id d.de...0304
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MySQL不支持full outer join 做满外连接 select employee_id,department_name from employees e full outer join de...0320
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select employee_id,department_name from employees e left join departments d on e.department_id d.de...0310
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满外连接(mysql不支持 full outer join 做满外查询)UNION做满外查询 SELECT employee_id,department_name FROM employees e f...0294
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外连接的分类：左外连接、有外连接、满外链接 满外连接 SELECT employee_id,department_name FROM employees e FULL OUTER JOIN depar...0332
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左外连接、右外连接、满外链接满外链接SELECT employee_id,department_nameFROM employees e FULL OUTER JOIN departments dON...0291
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外连接分类：左外、右外、满外 满外链接 SELECT employee_id,department_id FROM employees e FULL OUTER JOIN departments ...0311
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左外连接、右外连接、满外链接 满外链接 SELECT employee_id,department_name FROM employees e FULL OUTER JOIN departments ...0265
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外连接的分类：左外、右外连接和满外连接 满外连接 SELECT employee_id,department_name FROM employees e FULL OUTER JOIN departm...0290
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SELECT employee_id,department_name FROM employees e FULL JOIN departments ON e.department_idd.depart...0279
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满外连接 SELECT employee_id,department_id FROM employees e FULL JOIN departments d ON e.department_idd.d...0290